nuclear strategy

nuclear strategy

 the formation of tenets and strategies for producing and using nuclear weapons.

      Nuclear strategy is no different from any other form of strategy in that it involves relating military means to political ends. In this case, however, the military means in question have been so powerful and destructive that it has been doubted whether any worthwhile political purpose could be served by their use. On the one hand, it has been questioned whether any country with pretensions to civilization could unleash such a devastating force as nuclear weapons (nuclear weapon). On the other hand, it has been noted that their use against an opponent similarly endowed would result in an equally ruinous retaliation. The central issue for nuclear strategy, therefore, is less how to win and wage a nuclear war than whether by preparing to do so it is possible to create a deterrent effect. The minimum objective would be to deter another's nuclear use; the maximum, to deter any aggression on the grounds that any hostilities might create the extreme circumstances in which the restraints on nuclear use would fall away.

      This maximum objective, which was the one adopted by both superpowers during the Cold War period, required close attention to the links with more conventional strategy and also to the wider political context, including alliance formation and disintegration. However, nuclear strategists paid little attention to this wider context because of the East-West conflict's remarkable continuity, with two alliances each dominated by a superpower—the North Atlantic Treaty Organization (NATO) by the United States and the Warsaw Pact by the Soviet Union (Union of Soviet Socialist Republics). Although attempts to reproduce these alliances in continents other than Europe met with scant success, their stability within Europe meant that they were virtually taken for granted. Nuclear strategy then became associated with more technical questions relating to the capabilities of various weapons systems and the range of potential forms of interaction with those of an enemy under hypothetical scenarios. With the end of the Cold War most of these scenarios became moot, raising the question of whether there was still a role for nuclear strategy. The answer seemed to lie less in how the old superpowers might use these weapons than in the consequences of their proliferation into a much more complex international system.

The atomic bomb and American strategic thought
 The first successful test of the atomic bomb took place in New Mexico in July 1945 as the leaders of Britain, the Soviet Union, and the United States met at the Potsdam Conference to discuss the shape of the postwar world. This context coloured the early American appreciation of the potential foreign-policy role of the new weapons, with the result that nuclear strategy thereafter became bound up with the twists and turns of the Cold War between East and West.

      However, the decision to actually use the bomb against Japan reflected the more immediate urge to end the war as soon as possible and certainly before it became necessary to mount an invasion of the mainland. The atomic bombing of Hiroshima and Nagasaki in August 1945 was a means of shocking Japan into surrender. The choice of civilian rather than purely military targets, and the consequent immense loss of life, reflected the brutalizing experience of the massive air raids that had become commonplace during the war. Afterward it was assumed that any future atomic bombing would also be against cities. As weapons of terror, they appeared to have brought 20th-century trends in warfare to their logical conclusion.

      The first nuclear weapons were in the range of other munitions (the bomb that destroyed Hiroshima was equivalent to the load of some 200 B-29 bombers); also, at least initially, the weapons were scarce. The key development introduced by atomic bombs was less in the scale of their destructive power than in their efficiency. By the start of the 1950s, though, this situation had been transformed by two related developments. The first was the breaking of the U.S. monopoly by the Soviet Union, which conducted its first atomic bomb test in August 1949. Once two could play the nuclear game, the rules had to be changed. Anyone who thought of initiating nuclear war would henceforth need to consider the possibility of retaliation.

      The second development followed from the first. In an effort to extend its effective nuclear superiority, the United States produced thermonuclear bombs (thermonuclear bomb), based on the principles of nuclear fusion rather than fission (binary fission), upon which the atomic bombs were based. This made possible weapons with no obvious limits to their destructive potential. Opposition to this development by influential nuclear scientists, such as Robert Oppenheimer (Oppenheimer, J. Robert), was disregarded by Pres. Harry S. Truman (Truman, Harry S.) on the grounds that the Soviet Union would not suffer from any comparable moral inhibitions.

      This move was not matched by a pronounced nuclear bias in U.S. strategy. The weapons were still scarce, and it seemed only a matter of time before any advantages accruing to the United States through its lead would be neutralized as the Soviet Union caught up. The Truman administration assumed that the introduction of thermonuclear weapons would extend the time available to the United States and its allies (including NATO) to build up conventional forces to match those of the Soviet Union and its satellites. A series of events, from the Berlin blockade (Berlin blockade and airlift) of 1948 to the Korean War of 1950–53, had convinced the United States that the communists were prepared to use military means to pursue their political ambitions and that this could be countered only by a major program of Western rearmament.

Massive retaliation
      The administration of Pres. Dwight D. Eisenhower (Eisenhower, Dwight D.), which came to power in January 1953, saw things differently. It reflected on the frustrating experience of the inconclusive conventional war fought in Korea and wondered why the West had not made more use of its nuclear superiority. Eisenhower was also extremely worried about the economic burden of conventional rearmament. Assigning a greater priority to nuclear weapons provided the opportunity to scale down expensive conventional forces. By this time the nuclear arsenal was becoming more plentiful and more powerful.

      The strategy that emerged from these considerations became known as “massive retaliation,” following a speech made by U.S. Secretary of State John Foster Dulles (Dulles, John Foster) in January 1954, when he declared that in the future a U.S. response to aggression would be “at places and with means of our own choosing.” This doctrine was interpreted as threatening nuclear attack against targets in the Soviet Union and China in response to conventional aggression anywhere in the world.

      Massive retaliation was widely criticized. In the United States the Democratic Party, whose policy under Truman was being reversed—and the army and navy, whose budgets were being cut at the expense of the air force's Strategic Air Command—charged that it placed undue reliance on nuclear threats, which would become less credible as Soviet nuclear strength grew. If a limited challenge developed anywhere around the Sino-Soviet periphery (the two communist giants were seen to constitute a virtual monolith) and the United States neglected its own conventional forces, then a choice would have to be faced between “suicide or surrender.”

First and second strikes
      Massive retaliation was also criticized for failing to appreciate possible areas of Soviet superiority. This criticism grew after the Soviet Union demonstrated its technological prowess by successfully launching the first artificial Earth satellite ( Sputnik 1) in October 1957, not long after it had also made the first tests of an intercontinental ballistic missile (ICBM), the SS-6. Concern grew that the Soviet Union was outpacing the United States in missile production and thereby leading to a “missile gap.” (It might have been argued that after a certain level of destructive capability had been reached by both sides, an effective stalemate would be reached and extra weapons would make little difference, promising only, as British Prime Minister Winston Churchill (Churchill, Sir Winston) put it, to make “the rubble bounce.”)

      However, by this time nuclear strategy was becoming much more sophisticated. With the RAND Corporation, a think tank based in Santa Monica, Calif., taking the lead, new analytical techniques were being developed. These were often drawn from engineering and economics, rather than the more traditional strategic disciplines of history and politics. In a celebrated RAND study of the mid-1950s, a team led by Albert Wohlstetter demonstrated that the air bases of the Strategic Air Command could be vulnerable to a surprise attack, after which retaliation would be impossible, a situation that would expose the United States and its allies to Soviet blackmail.

      A devastating surprise attack was considered possible because, with improved guidance systems, nuclear weapons were becoming more precise. Therefore, it was not inevitable that they would be used solely in countervalue strikes against easily targeted political and economic centres; instead, it was just as likely that they would be used in counterforce strikes against military targets. A successful counterforce attack that rendered retaliation impossible—known as a “first strike”—would be strategically decisive. If, however, the attacked nation possessed sufficient forces to survive an attempted first strike with retaliatory weapons intact, then it would have what became known as a second-strike capability.

      Other strategists, such as Thomas Schelling (Schelling, Thomas C.), warned that if both sides sought a first-strike capability, this could lead to an extremely unstable situation, especially during a period of high political tension when both were nervous as to the other's intentions. If it was feared that an enemy first strike was imminent, then there would be powerful pressures to attack first, and if the enemy recognized these pressures, then that would encourage him to get in his strike. Schelling described this as the “reciprocal fear of surprise attack.”

      On the other hand, if both sides were confident of their second-strike capabilities, then there would be considerable stability, as there would be no premium attached to unleashing nuclear hostilities. The benefits of a mutual second-strike capability led to the concept of arms control, by which potential adversaries would put less priority on simply lowering their force levels (as advocated by proponents of disarmament) and more on removing incentives to take the military initiative in the event of a severe crisis.

Mutual assured destruction
 In the event, technological developments supported the second strike. Initially, long-range bombers had to be kept on continual alert to prevent them from being eliminated in a surprise attack. When ICBMs moved into full production in the early 1960s with such systems as the U.S. Titan (Titan rocket) and Minuteman I (Minuteman missile) and the Soviet SS-7 and SS-8, they were placed in hardened underground silos so that it would require an unlikely direct hit to destroy them. Even less vulnerable were submarine-launched ballistic missiles (SLBMs) such as the U.S. Polaris (Polaris missile) and the Soviet SS-N-5 and SS-N-6, which could take full advantage of the ocean expanses to hide from enemy attack.

      Meanwhile, attempts to develop effective defenses against nuclear attack proved futile. The standards for antiaircraft defense in the nuclear age had to be much higher than for conventional air raids, since any penetration of the defensive screen would threaten the defender with catastrophe. Progress was made, using surface-to-air missiles (SAMs) such as the U.S. Nike (Nike missile) series, in developing defenses against bombers, but the move to ICBMs, with their minimal warning time before impact, appeared to render the defensive task hopeless. Then, during the 1960s, advances in radars (radar) and long-range SAMs promised a breakthrough in antiballistic missile defense, but by the early 1970s these in turn had been countered by improvements in offensive missiles—notably multiple independently targeted reentry vehicles (MIRVs (MIRV)), which could swamp any defenses. (The first MIRVed ICBMs were the U.S. Minuteman III and the Soviet SS-17.)

      Measures of civil defense, which could offer little protection to the civilian populace against nuclear explosions and, at best, only some chance of avoiding exposure to nuclear fallout, also appeared hopeless in the face of the overwhelming destructive power being accumulated by both sides.

      By the mid-1960s fears had eased of a technological arms race that might encourage either side to unleash a surprise attack. For the foreseeable future each side could eliminate the other as a modern industrial state. Robert McNamara (McNamara, Robert S.), the U.S. secretary of defense for much of that decade, argued that so long as the two superpowers had confidence in their capacity for mutual assured destruction—an ability to impose “unacceptable damage,” defined as 25 percent of population and 50 percent of industry—the relationship between the two would be stable.

      The need to maintain strategic stability influenced the Strategic Arms Limitation Talks (SALT (Strategic Arms Limitation Talks)), which began in 1969 and became the centrepiece of Pres. Richard M. Nixon (Nixon, Richard M.)'s policy of détente with the Soviet Union. In 1972, with the Anti-Ballistic Missile (ABM) Treaty (Anti-Ballistic Missile Treaty), the two sides agreed to ban nationwide antiballistic missile systems, thereby confirming the primacy of the offense. Attempts to consolidate the strategic standoff with a treaty limiting offensive weapons proved more difficult. (In 1972 only an interim freeze had been agreed upon.) The second round of talks was guided mainly by the concept of parity, by which a broad equality in destructive power would be confirmed. However, the difficulty in comparing the two nuclear arsenals, which differed in important respects, resulted in long and complex negotiations. A treaty called SALT II was agreed on in June 1979, but by this time détente was in decline, and it was dealt a final blow with the Soviet intervention in Afghanistan at the end of that year. In addition, the strategic underpinnings of arms control had been undermined by a growing dissatisfaction in the United States with the principles of mutual assured destruction.

Alternatives to assured destruction
      Critics found the condition of mutual assured destruction—which had become known by its acronym MAD—alarming. If MAD failed to deter, then any war would soon lead to genocide. In addition, if the threat of retaliating with nuclear weapons was used to deter only nuclear attack, then the value of nuclear threats in deterring conventional aggression would be lost. In principle, this could undermine the commitments made to allies to use nuclear weapons on their behalf if they faced such aggression.

      Particularly alarming was evidence that the nuclear strategy of the Soviet Union envisaged using nuclear weapons in a traditional military manner much as if they were conventional weapons—that is, at most to obtain a decisive military advantage in a conflict and at the very least to reduce the damage that an enemy might do to Soviet territory (if necessary, by launching preemptive strikes). During the negotiations that led to SALT II, critics also argued that the momentum behind the Soviet ICBM program, in combination with improved guidance systems that gave unprecedented accuracy to MIRVed missiles, had opened a “window of vulnerability” in the U.S. deterrent force. They expressed concern that the Soviet Union, by deploying the SS-17, SS-18, and SS-19 ICBMs, was building a force of such size and accuracy that just a portion of it could attack and destroy the U.S. Minuteman and Titan ICBM force without killing huge numbers of civilians. Although this would not be a true first strike, since U.S. bombers and submarines could retaliate, these latter delivery systems were not accurate enough to produce an equivalent counterforce attack against Soviet missile silos. Instead, the United States would be forced to escalate the war by retaliating against cities. This repugnant act would be of no strategic value, however, because the rest of the untouched Soviet missile force would then be used to wipe out U.S. cities. The United States, therefore, would have placed itself in a position in which it would have to choose between surrender and slaughter.

      The realism of this scenario may be doubted, given that no attack against U.S. ICBMs would be accurate enough to avoid massive civilian destruction; therefore, the Soviet Union could be certain that the United States would feel little repugnance at retaliating against Soviet cities. Nonetheless, it was used to criticize SALT II, a complicated treaty that offered few means of verification and did little to interfere with the Soviet ICBM program. It was also used to argue for the development of U.S. ICBMs comparable to the Soviet systems.

      The first formal break with assured destruction came when Secretary of Defense James Schlesinger announced in 1974 that future U.S. nuclear targeting would be geared to selective strikes and not just the sort of massive attacks suggested by the philosophy of mutual assured destruction. Although Pres. Jimmy Carter's (Carter, Jimmy) secretary of defense, Harold Brown, was skeptical that either side would actually find such sophisticated nuclear strikes possible, he accepted the need to develop a range of targeting options to convince the Soviet Union that it could not gain the upper hand by such methods. This was the main theme of the “countervailing” strategy announced in 1980.

      Ronald W. Reagan (Reagan, Ronald W.) came to office the next year with a much more radical critique of MAD, and his presidency was devoted to attempts to escape from its constraints. Initially, this took the form of a search for offensive nuclear operations that would enable the United States to prevail in a protracted war with the Soviet Union, rather than just countervail. It involved upgrading the old civil-defense systems and deploying the MX (Peacekeeper missile), an experimental ICBM originally designed to survive a first strike through some form of mobile deployment. Neither of these ideas was politically popular. In the end, civil defense was rejected as impossible, and the MX (later named the Peacekeeper missile) was deployed in Minuteman silos and in only a fraction of the originally proposed numbers.

      In March 1983 Reagan announced the start of a second search for a means to escape from MAD. This time it was for a defensive system that could intercept ballistic missiles. Reagan spoke of his preference for protecting lives rather than avenging them, and of the possibility of rendering nuclear weapons “impotent and obsolete,” but the vision could not be turned into reality. Although the Strategic Defense Initiative, or SDI (which critics dubbed Star Wars, after the science-fiction movie), was given a high priority and billions of dollars for research, the idea of protecting society as a whole from nuclear attack soon appeared hopelessly impractical, given the diverse means of delivering nuclear weapons. The main question became whether SDI could protect key political and military assets from attack, but even here some of the more futuristic ideas—such as using space-based lasers (laser) to destroy ballistic missiles just as they were launched—proved technically demanding and expensive. Political support waned.

      Meanwhile, Reagan had replaced talks on arms limitation with the Strategic Arms Reduction Talks (START). At first the Soviet Union argued that no progress on strategic arms control was possible so long as SDI was being pursued. Mikhail Gorbachev (Gorbachev, Mikhail), who became the Soviet leader in 1985, offered his own vision of how to escape from assured destruction in a speech in January 1986, in which he set out a radical disarmament agenda leading toward a nuclear-free world by the end of the century. In October 1986, at a summit in Reykjavík, Ice., Reagan came close to embracing this vision, although no agreement was reached because he refused Gorbachev's demand to abandon SDI. Nevertheless, the concept of arms reduction had taken hold, and START proceeded with a new emphasis on deep cuts in nuclear arsenals.

      The switch to arms reduction suggested that Reagan's critique of MAD had concluded with the view that, given the difficulties of designing and deploying both discriminating offensive options and effective ballistic missile defenses, it was better to do away with nuclear weapons altogether. This constituted a formidable challenge to the orthodox view that nuclear weapons exercised a stabilizing deterrence on international misbehaviour and were a reassurance to allies of the United States, who faced preponderant Soviet conventional forces. Reagan was prevailed upon to moderate his critique, but not before doubts had been created as to the strength of the U.S. commitment to guaranteeing the security of its allies with nuclear weapons.

      On the other hand, the alacrity with which Gorbachev embraced complete nuclear disarmament reflected the greater freedom of maneuver available to any Soviet leader as well as the subordinate role of the Warsaw Pact allies. Whereas NATO's European members were eager to lock the United States into their security arrangements for fear that they would be unable to stand alone, the Soviet Union had drawn its allies into a pact that met its own security requirements—that is, extending its form of government into eastern Europe and creating a buffer between it and the hostile capitalist forces of the West. Members of the Warsaw Pact might be beneficiaries of a Soviet nuclear guarantee, but there was no question of shared decision making on nuclear matters. In fact, during the 1970s Soviet doctrine had appeared to have the goal of extracting the maximum regional benefit from its nuclear arsenal—vis-à-vis both western Europe and China—while maintaining Soviet territory as a sanctuary from nuclear devastation. Its priority in any nuclear conflict would have been to confine nuclear exchanges to central Europe while showing a certain respect for U.S. territory as a sanctuary in the hope of reciprocal treatment by the United States. If escalation had appeared inevitable, however, or if the United States had appeared to be preparing a first strike, then Soviet doctrine would have called for a preemptive blow against the United States' long-range arsenal in an effort to reduce damage to the Soviet Union.

      This approach was undermined by evidence that U.S. nuclear doctrine and deployment showed no respect for geographic sanctuary and by the Soviets' own recognition of the sheer difficulty of managing a nuclear exchange in such a way as to reduce the vulnerability of Soviet territory. Even before Gorbachev, there had been a discernible trend in military thinking toward emphasizing the opening conventional stage of a war and toward achieving victory within that stage. Gorbachev accelerated this trend. Because he was not prepared to allow overambitious nuclear doctrines to interfere with his objective of improving relations with the West, he was much more prepared than his predecessors to compromise in arms control negotiations. In addition, he was influenced by the April 1986 disaster at the Chernobyl (Chernobyl accident) nuclear power plant, which demonstrated that radioactive fallout had little respect for national boundaries.

Flexible response
      This gave a new twist to the long-standing debate within NATO over nuclear deterrence. The United States' allies had already learned to live with unavoidable doubts over the quality of the U.S. nuclear guarantee of European security. These began to surface in the 1950s, after the Eisenhower administration had embraced nuclear deterrence and the allies had agreed that it was natural to rely on the most advanced weapons available—especially those in which the United States then enjoyed a clear superiority. The alternative course—relying on conventional forces—would have caused severe economic strains, and there was deep pessimism as to the possibility of ever matching Soviet conventional strength.

      The conventional buildup set in motion under the Truman administration had one important requirement: that the Federal Republic of Germany be rearmed. This set in motion a sharp debate in Europe that was coloured by memories of the recent war, but in 1955 a formula was found in which West Germany rearmed but was permitted no chemical or nuclear weapons and was part of NATO's military command. In return, the West German government sought a commitment from its new allies to the concept of forward defense, in which any aggression would be rebuffed at the border between East and West Germany. (With its lack of depth and its concentration of population and industry close to the East, the Federal Republic had no wish for its allies to trade German soil for more time in responding to a Soviet attack.)

      Once it had been decided that NATO would not attempt to match Soviet conventional forces, then forward defense meant, in effect, that nuclear deterrence was linked to the inter-German border. European members of NATO had no qualms about this arrangement, because it saved them the expense of sustaining large-scale conventional forces, and they did not believe that the Soviet Union had any interest in invading western Europe that would be worth the slightest risk of nuclear war.

      In the early 1960s the administration of Pres. John F. Kennedy (Kennedy, John F.), which confronted the Soviet Union over the Berlin Wall and the Cuban missile crisis, did not take such a relaxed view of Soviet intentions. Given what it saw as the Soviet capacity for retaliation, the United States thought it unlikely that any president would use nuclear weapons first, and it was hard to see how a credible deterrent could be fashioned out of an incredible nuclear threat. At the very least, the United States insisted, NATO should raise the nuclear threshold—that is, the point at which nuclear weapons would be necessary to stave off conventional defeat. This would be accomplished by extra conventional forces. New analyses suggested that it would be easier than hitherto assumed, because previous assessments had exaggerated the strength of the Warsaw Pact. In addition, the Soviet leader, Nikita Khrushchev (Khrushchev, Nikita Sergeyevich), who was convinced that nuclear weapons made it unnecessary to maintain vast armies, was imposing major reductions on his generals at that time.

      European governments argued in response that conventional forces simply could not provide a sufficient deterrent. Since Soviet territory would not be vulnerable in a conventional war, the Kremlin might judge that the risks of conventional war were acceptable. And even if the Warsaw Pact was defeated, central Europe would still be devastated. Therefore, all war had to be deterred, not just nuclear war.

      In 1967 a compromise was found in the doctrine of “flexible response.” Under this compromise, the Europeans recognized the U.S. requirement for an extended conventional stage, so that the first shots across the Iron Curtain would not lead automatically to nuclear holocaust, and the United States accepted the need for a clear link between a land war in Europe and its own strategic nuclear arsenal.

Limited nuclear war
      Flexible response did not prescribe a particular course of action; rather, it retained for NATO the possibility that it would be the first to use nuclear weapons and suggested that this initially would involve short-range tactical weapons.

      When tactical nuclear weapons such as the Honest John rocket were introduced into the NATO inventory during the 1950s, the U.S. Army had supposed that these could be considered quite separately from intercontinental strategic missiles. If anything, tactical nuclear weapons were closer to conventional weapons and were to be integrated with general-purpose forces. A number of strategic thinkers in the United States, including Henry Kissinger (Kissinger, Henry A.) and Robert Osgood, hoped that, if the West could reinforce its military strength in this way, it would be possible to take on communists in limited nuclear wars without resort to incredible threats of massive retaliation.

      However, once the widespread use of battlefield nuclear weapons by NATO was simulated in war games in the 1950s, it became apparent that they would result in such death and destruction that they could in no way be considered conventional. Also, as Warsaw Pact forces obtained comparable capabilities with such weapons as the SS-1 missile, any Western advantage seemed neutralized. Unless a retreating defender used nuclear weapons immediately, any later use could well be over his own territory and against a dispersed enemy. And, if tactical nuclear weapons were used to impose great costs on the enemy, there would be a risk that the conflict could soon escalate to strategic nuclear use. Limited nuclear war, therefore, appeared a contradiction in terms.

      European governments were still loath to dispense with the weapons. Although they could not be considered ordinary weapons of war, their close integration with conventional forces meant that they were more likely than U.S. strategic nuclear forces to get entangled in a land war in Europe. The idea was to use the risk of escalating to total nuclear war with the United States as a powerful deterrent effect on the Soviet Union's actions in Europe. According to this strategy, deterrence did not require a certainty that nuclear weapons would be used, only a risk. The consequences of miscalculation were so horrendous that a government dared not gamble. However, the United States, whose own security was now being linked to peace in Europe, was still more concerned that miscalculation might nonetheless take place.

      Certainly, NATO's procedures for “going nuclear” were designed to reduce the risk of unauthorized use. But this created a tension between theory, which suggested that deterrence was served by the risk that a conflict might get out of control, and practice, which exhibited a determination not to lose control. The tension was reflected in discussions over how to replace the first generation of tactical nuclear weapons as they became obsolete in the 1970s. If the next generation was made smaller and more precise, then this would imply a readiness to use them to fight a nuclear war rather than simply deter. An apparent readiness to wage nuclear war was at the heart of a controversy over the neutron bomb (actually a thermonuclear missile warhead or artillery shell of enhanced radiation and reduced blast), which was criticized for blurring the boundary between conventional and nuclear weapons and thereby making it much easier to go nuclear.

      Even greater controversy was generated by NATO's decision in 1979 to replace the Pershing IA, a medium-range ballistic missile, with two weapons that would constitute a more powerful intermediate-range nuclear force (INF): the Pershing II intermediate-range ballistic missile (IRBM) and the Tomahawk cruise missile. The origins of the program to modernize the INF lay in two western European concerns over the U.S. nuclear guarantee. The first concern resulted from the tendency of the United States in the Strategic Arms Limitation Talks to concentrate on achieving symmetry between the nuclear forces of the two superpowers while paying little attention to the superiority, within the European theatre, of the Warsaw Pact in both nuclear and conventional weapons. Particularly worrisome was the Soviet SS-20, an IRBM that was first tested in 1974 and deployed in 1977. Although the SS-20 did not signal any shift in Soviet policy (U.S. military bases in Europe and the British, French, and Chinese nuclear forces had long been targeted), it was the first new missile designed for this purpose to have appeared in some time. In 1977 Chancellor Helmut Schmidt (Schmidt, Helmut) of West Germany argued that NATO should not tolerate Soviet superiority in such weapons. This suggested that the imbalance should be dealt with either through arms control or by an equivalent Western effort to upgrade its own INF.

      The second concern placed far less stress on the SS-20 and more on the requirements, within NATO's strategy of flexible response, to be able to strike Soviet territory with systems based in western Europe in the event of full-scale war on the Continent. This requirement existed irrespective of the new Soviet missiles, and it was becoming problematic because of the age of NATO's medium bombers and the lack of any U.S. intermediate-range land-based missile in Europe. A modernized INF made more sense than systems designed for battlefield use, because they posed a direct threat to the Soviet homeland and thus challenged Soviet ideas of confining any nuclear exchanges to NATO and Warsaw Pact countries, with superpower territory accorded sanctuary status.

      However, large-scale protests sprang up in Europe and North America after the decision to modernize. Voicing a concern that a new arms race was getting under way in Europe, they took on special urgency following the Soviet invasion of Afghanistan (two weeks after NATO's decision on the INF), with the decline of arms control, and with the election of Ronald Reagan, who had a hawkish reputation, to the U.S. presidency. The strength of the protests encouraged NATO to moderate its policy. The rationale for modernizing the INF was switched from the requirements of flexible response to the more politically marketable aim of matching the deployment of the SS-20, and in November 1981, at the start of negotiations on this issue, Reagan offered to eliminate NATO's INF if all SS-20s were removed. This “zero option” was rejected by Leonid Brezhnev (Brezhnev, Leonid Ilich), and, despite warnings from the Soviet Union that deployment of a modernized INF would mean the end of negotiations, the first Tomahawk and Pershing II missiles were delivered in late 1983. Yury Andropov (Andropov, Yury Vladimirovich) promptly broke off the INF talks, hoping to force a breach in the unanimity of the NATO allies, but, when the expected crisis failed to arise, Konstantin Chernenko (Chernenko, Konstantin Ustinovich) agreed to resume negotiations. Soon afterward Gorbachev was in charge, and he decided that the zero option was in the Soviet interest: eliminating the INF would remove a direct threat to Soviet territory in return for removing a larger number of Soviet missiles that could strike only the allies of the United States. In December 1987, Gorbachev and Reagan signed the Intermediate-Range Nuclear Forces (INF) Treaty (Intermediate-Range Nuclear Forces Treaty).

      Reagan's interest in a nuclear-free world—highlighted by SDI, the Reykjavík summit, and the INF Treaty—encouraged discussion among some Europeans of the possibility of a European defense community that would be less dependent upon the United States. In practice this would require the substitution of a French and British strategic nuclear guarantee for an American one. Britain had always, officially at least, committed its strategic nuclear forces (which since the late 1960s had been SLBMs) to NATO. Britain's rationale for maintaining a national nuclear force involved a combination of the political influence that could be brought to bear on its allies, especially the United States, and a claim to be contributing to the overall deterrent posture. France, by contrast, had always had a much more nationalistic rationale, but after the 1970s, following the introduction of the Pluton short-range missile, which could land only on German territory, it was obliged to consider the role that its force de frappe might have in the defense of its allies. In any event, neither Britain nor France was eager to take over from the United States the broader deterrent role; nor were those who had previously sheltered under the U.S. umbrella interested in a European alternative.

      Although the United States' allies saw that the treaty had political benefits in improving East-West relations, some strategists worried that it sounded the death knell for nuclear deterrence. One response by NATO was to see whether it would be possible to build up other nuclear systems by way of compensation, but the difficulty here was that the improved political climate undermined public support for such moves. In West Germany the question of modernizing the short-range Lance missile was coloured by the direct and almost unique threat this weapon posed to German territory. There had always been the strongest official support for the traditional concept of nuclear deterrence in that country, but, with the political climate improving, West German politicians such as Chancellor Helmut Kohl (Kohl, Helmut) came to argue that yet another nuclear modernization program would send the wrong signals to the East. They were also unhappy at the apparent readiness of the United States and Britain to retain Germany as a battlefield for short-range nuclear exchanges while securing the removal of intermediate- and long-range systems that threatened their own territories. The Soviet Union possessed large numbers of short-range missiles and had been modernizing them for a decade with such systems as the SS-21, but Gorbachev indicated a readiness to negotiate their complete elimination. British Prime Minister Margaret Thatcher (Thatcher, Margaret) and U.S. Pres. George H.W. Bush (Bush, George) insisted that this would be imprudent, and, following their lead, NATO agreed in 1989 to postpone modernizing the Lance in the hope that negotiations on conventional force reductions would reach a satisfactory conclusion and thus reduce the importance of nuclear weapons as a means of compensating for the Warsaw Pact's conventional superiority.

      By the end of 1989 the issue seemed completely beside the point. The collapse of European communism by the time that Bush met with Gorbachev just off the coast of Malta in December 1989 meant that the Cold War could be declared over. There was nothing left to deter, while the potential targets for NATO's short-range nuclear missiles were embracing liberal democracy and capitalism.

Conventional strategy
      Over the 1980s, the main consequence of the developing uncertainties surrounding nuclear deterrence was an increased interest in conventional strategy. For the first two decades of the nuclear age, there had been little interest in this area; given the conviction that any war between the great powers would soon go nuclear, there seemed to be little point in preparing for nonnuclear engagements.

      Meanwhile, France and Britain fought a number of colonial wars, with France's struggles in Indochina and Algeria particularly protracted and bitter. During the 1960s the United States became steadily involved in Vietnam, in which a weak pro-Western government in the South faced an insurgency backed by a communist government in the North. After 1965 there was a substantial commitment of all elements of U.S. military power, excluding nuclear weapons but including a bombing campaign against the North.

      Partly as a result of these conflicts, interest began to revive in the likely character of a conventional war involving the major powers. In the West this was also a result of the adoption of flexible response, which demanded greater attention to conventional warfare. In the East as well, to some extent because of the shift in NATO doctrine, conventional warfare grew in importance. There was some irony in this. Flexible response reflected NATO's concern over Soviet conventional superiority, yet, under Khrushchev, Soviet forces had been cut back dramatically on the assumption that any future war would go nuclear from the start. After Khrushchev was ousted in 1964, the Soviet Union began a major buildup of conventional forces, and in 1967 military exercises were held that indicated the expectation of a substantial conventional stage at the start of a future war. Besides the need to remain strong in relation to NATO, by the early 1970s the Soviet buildup reflected concern over a possible threat from China, which had become extremely hostile and was rapidly improving relations with the West. Again, there was irony in this development. China and the Soviet Union had finally split in 1963 over Khrushchev's readiness to deal with the West, over his unwillingness to back the Chinese nuclear program, and over a long-standing border dispute between the two countries. Later, the years of the Cultural Revolution (1966–76) convinced Brezhnev that the Chinese were dangerous and unstable; clashes on the border in 1969 led to hints from Moscow that it might take action against China's fledgling nuclear capability.

      In the late 1970s this Warsaw Pact buildup, coupled with Soviet-supported operations in such developing countries as Vietnam, Angola, and Ethiopia, stimulated NATO to improve its capacity to resist an offensive and mobilize quickly. This was based on the fear that, without sufficient warning to get mobilization under way, the strength of Soviet frontline and follow-on forces could overwhelm NATO's thin peacetime lines of defense. Growing doubts over the credibility and durability of nuclear deterrence also increased the importance of improving conventional forces.

      Even with increased allocations to defense, NATO governments remained pessimistic about their ability to match Warsaw Pact forces. Although the total military power of NATO was much greater, geography favoured the Warsaw Pact, since reserves from the East could reach the front much more quickly than reserves from the United States, which would have to make a hazardous journey across the Atlantic Ocean. Against this pessimism it was noted that greater numbers were normally assumed to be required by the attacker (a ratio of three to one was often cited, although the critical factor was not the overall ratio but the strength of the offense at the point of attack). Technological advances were said to further favour the defense, in that extremely precise and comparatively simple guided weapons could be used to take on tanks and high-performance aircraft, the central actors in any offensive.

      This optimism was questioned by other strategic analysts. They noted that the natural advantage accruing to the defense would do so only if the attacker had to force a way through well-prepared defensive positions rather than simply outflank them. The ability to impose attrition on the enemy would be reduced if the enemy was able to fight a war of maneuver, in which an immobile defense might find itself caught off balance. Moreover, in a war of maneuver, the potential benefits of simple air-defense and antitank systems would soon be qualified by the need to make them mobile, which would put them in need of protection as well.

      The proponents of maneuver warfare warned that this was the type favoured by the Warsaw Pact. The Soviet Union preferred the offensive because it would make it possible to defeat the enemy quickly, before the full weight of its power could be brought to bear. Soviet doctrine during the 1970s suggested that a key aspect of this offensive would be the neutralization of NATO's nuclear assets by overrunning key installations, with a possible shift to a regional nuclear offensive when the right moment arrived. By the early 1980s doubts over whether a war would last long enough for the right moment ever to arrive, and whether nuclear exchanges could be limited geographically, encouraged a greater stress by the Soviet military on obtaining a victory in the conventional stage.

      The maneuver school eventually encouraged a shift in NATO thinking toward more mobile operations, as well as a greater willingness to contemplate attacks on Warsaw Pact territory in an effort to reduce the momentum of a Pact offensive. In 1982 the United States adopted an approach known as AirLand Battle, which emphasized maneuver and the need to see the battlefield in the round, taking advantage of emerging military technologies to synchronize operations and direct fire with greater accuracy. The strategy of “follow-on forces attack” (FOFA), for example, envisaged the holding of a Pact offensive on the ground while attacking the Pact's follow-on forces in the rear with air strikes. Such aggressive defense was criticized by peace movements as being too provocative. Instead, they proposed nonprovocative strategies based on “defensive defense,” which would lack any capability to go on the offensive. These ideas proved difficult to turn into practice, as any sort of mobile force could move forward, and few armies would tolerate being deprived of their capacity to counterattack.

      Meanwhile, in the Soviet Union concern over the burden of high defense expenditures, combined with an awareness that the arms buildup of the 1970s had triggered a counterresponse from NATO, encouraged “new thinking” that actually picked up on the ideas of defensive defense. These ideas were received by Soviet military commanders with as little enthusiasm as they were received in the West. Nevertheless, they influenced cuts in Soviet forces, announced by Gorbachev in December 1988, that eliminated some military units of a clearly offensive nature without depriving the Warsaw Pact of its offensive options. However modest in themselves, the cuts raised the prospect of an end to the role of these forces in sustaining the Soviet Union's dominance over eastern Europe.

After the Cold War
      The demise of the postwar alliance system and the rapid contraction of the Soviet empire in Europe required a rapid reassessment of strategy. For NATO the traditional calculus was turned upside down. There was no longer a conventionally superior opponent. In all respects NATO was far more powerful than any other group of countries. By the end of 1991 the Soviet Union itself had broken up, with its once formidable armed forces in some disarray. If there were dangers in Europe, they were soon recognized not as the traditional threats of a rising and radical great power but as the disturbing new threat of chronic weakness, which led to questions about the control of nuclear systems within the former Soviet Union and to the revival of older conflicts and rivalries within Europe that had been suppressed during the Cold War.

 Concerned about disorder within the Soviet Union, the United States, instead of worrying about new tactical nuclear weapons or even pausing to design a new arms control framework to deal with the problem, soon took unilateral measures to withdraw some nuclear weapons from land and sea deployments—all in the justified expectation that Russia would reciprocate. The strategic weapons were handled through the START process. In a series of agreements over the following decade, the United States and Russia pledged to shrink their respective stockpiles to about 2,000 warheads by 2012, a reduction of more than 80 percent. At the time of ratification of the last agreement by U.S. Pres. George W. Bush (Bush, George W.) and Russian Pres. Vladimir Putin (Putin, Vladimir) in 2003, U.S. strategic nuclear forces consisted of some 500 Minuteman III ICBMs, 14 Trident submarines equipped with 24 ballistic missiles, and about 200 bombers. No new strategic systems were under development, although there had been some work done on new nuclear warheads. The Russian force had more than 500 ICBMs, 12 ballistic missile submarines with fewer than 300 missiles, and fewer than 80 aircraft. The Russian numbers included the SS-27 ICBM, which was still under production.

      The slow pace of reductions frustrated disarmament advocates, who supposed that the end of the Cold War had strengthened the case for the complete abolition of nuclear weapons. The U.S. and Russian governments agreed that they were no longer enemies, yet the continued presence of massive arsenals created when they were ideological foes meant that there was an ever-present risk of a terrible accident or unauthorized launch. However, the case for abolition made little headway in NATO countries, although a more modest process of marginalizing of nuclear weapons was accepted. There was now no interest whatsoever in even threatening that a war might “go nuclear,” and there was every incentive to keep remaining weapons on a low-alert status to reduce the risks of unauthorized use. Western economic dominance and technological leadership, it was assumed, would deliver the means to defeat all comers in a conventional war. In January–February 1991 this point was made emphatically by Operation Desert Storm, the main engagement in the Persian Gulf War, in which an overwhelmingly superior conventional coalition force led by the United States forced Iraq to abandon Kuwait (occupied the previous August).

      The war was conducted along the lines of the AirLand Battle approach against an opponent that boasted a large and well-equipped army but little in the way of air defense. The United States' overwhelming air superiority was directed first against Iraq's military infrastructure and equipment and then against the morale of its forward troops, who could do little more than remain dug in. After Desert Storm there was talk of a “revolution in military affairs,” a new order in which precision guidance would be combined with advanced sensors and increasingly sophisticated information and communication technologies to produce an unassailable battlefield advantage.

      Meanwhile, those on the less-advantaged side of the technological divide continued to develop counterstrategies for asymmetrical warfare, whereby unconventional means might be used to overcome more technically advanced adversaries. In most cases the easiest route was to follow militia-based guerrilla warfare, playing on American memories of the Vietnam War (1954–75) and the bombings of the U.S. embassy and the U.S. Marine base in Beirut in 1983, which caused the United States to withdraw its peacekeeping force. A hurried departure from Somalia in 1993 and a reluctance to follow its NATO allies into peacekeeping operations in the former Yugoslavia suggested that the United States was averse to taking almost any casualties in conflicts where its most vital interests were not engaged. During the Serbian conflict in Kosovo (Serbia) (1998–99), for example, U.S. Pres. Bill Clinton (Clinton, Bill) relied on airpower alone to batter Serbia into ending its offensive against the Kosovars, although help was provided on the ground by the Kosovo Liberation Army. This formula of Western airpower fighting with local, and often quite unsophisticated, allies on the ground was even more in evidence in Afghanistan at the end of 2001 in the U.S. campaign against the al-Qaeda (Qaeda, al-) terrorist network and its Taliban hosts following the September 11 attacks against the United States.

 These attacks on two icons of American economic and military power, the World Trade Center in New York City and the Pentagon in Washington, D.C., using commercial airliners transformed by hijackers into guided missiles, demonstrated one possible form of asymmetrical warfare. This particular method had not been widely contemplated, but considerable attention had been directed to the possibility of acts of “superterrorism,” possibly using nuclear weapons but more likely chemical weapons (chemical weapon) or biological weapons (biological weapon). Such acts would be extreme versions of the more traditional forms of nuclear deterrence, designed to compensate for conventional inferiority—except that now the logic would be more likely to appeal to potential adversaries of the West. Thus, as the Warsaw Pact disappeared, Russian military leaders concluded that they had to forget past promises never to use nuclear weapons first and revive deterrence as their best option against an ascendant NATO. Would the United States, it was asked, have been so ready to go to war on Kuwait's behalf in 1991 if Iraq's nuclear program had reached maturity—even assuming that the Kuwaitis and Saudis themselves would not have capitulated already to Iraqi demands? For countries such as North Korea (Korea, North) and Iran, which claimed to be threatened by American power, nuclear weapons retained their attractions for deterrence purposes; indeed, they heightened the risks of conflict for all Western countries. By the start of the 21st century, North Korea was believed to have amassed a small stockpile of weapons, although of uncertain reliability, while Iran was determined to acquire uranium-enrichment capabilities that would enable it to build nuclear devices, though it denied that this was its intention. In both cases, these nuclear programs led to a degree of unwelcome international isolation that in turn led to a search for diplomatic compromises.

 Iran and North Korea, together with Iraq, were described by U.S. Pres. George W. Bush in January 2002 in his state of the union address as an “axis of evil.” Iraq had caused concern even before the Persian Gulf War, when it was clearly intent on acquiring nuclear weapons. After the war it became apparent that Iraq had made far more progress than previously realized in reaching its goal—this despite the fact that it had ratified the Treaty on the Non-proliferation of Nuclear Weapons (Non-proliferation of Nuclear Weapons, Treaty on the), as had North Korea. International controls imposed on Iraq following the Gulf War eliminated its nuclear program, but fears that the program was being reconstituted and might then be used to support terrorists was a central part of the United States' rationale for starting the Iraq War in 2003. After U.S. forces occupied Iraq, it became clear that no serious nuclear capability had been resurrected.

      At the same time, countries less likely to get involved in major conflicts demonstrated a readiness to eschew nuclear capabilities. In 1993 South Africa revealed that a small arsenal acquired covertly under the apartheid government had been dismantled, while Ukraine, Belarus, and Kazakhstan agreed to give up the systems inherited from the Soviet Union. Argentina and Brazil also moved away from a nuclear weapons capability.

      Nor was all proliferation necessarily about deterring Western countries. The most dangerous development was in fact in South Asia. In May 1998 India and Pakistan, both long assumed to be nuclear powers, confirmed their status by testing nuclear weapons within days of each other. Their intractable dispute over Kashmir continued to bring them close to war. Terrorist attacks by Islamist groups, including one against the Indian Parliament in December 2001, led to a particularly dangerous crisis. India blamed Pakistan for not doing enough to deal with terrorists being staged or supplied from its territory. Nevertheless, in order to avoid a conflict that might escalate to nuclear war, India refrained from taking unilateral military action against terrorist camps across the line of control in Kashmir or directly in Pakistan. The two sides drew away from the brink, and soon afterward a phase of conflict resolution began between the two countries, demonstrating that nuclear deterrence might still have benign effects.

      The example of India and Pakistan tended to support those strategic theorists, such as American Kenneth Waltz, who believed that the presence of nuclear weapons would introduce caution and restraint into all conflicts. Others argued that having them in areas of political instability and with unreliable command-and-control systems led to unacceptable risks of disaster. The United States took the view that so long as other states had nuclear arsenals, or even a capacity to inflict death and destruction on a massive scale by other means, then it was only prudent to maintain a substantial arsenal of its own. Even then the administration of George W. Bush claimed in 2001 that it could not be sure of deterring “rogue states,” should they acquire a crude long-range missile capable of delivering lethal warheads to the United States. To guard against this possibility, the United States abandoned the ABM Treaty (Anti-Ballistic Missile Treaty) in order to pursue a limited missile-defense system. Although this move was opposed by Russia, its relationship with the United States was so transformed from the Cold War days that it professed not to be too worried, especially as such a system would not eliminate Russia's own nuclear deterrent. Only in 2007, when plans were announced to deploy a few interceptors in Poland and the Czech Republic to help protect against an Iranian attack, did Moscow object. It was difficult to see what difference such limited defenses could make against a rogue missile strike, not to mention an arsenal of Russia's size, and so the suspicion was aroused that Russia was using the issue simply to make a larger point about its relations with the West. China's relations with the United States were less sure, as China's nuclear arsenal was small enough that it might not survive a first strike, thus possibly limiting its options in some future crisis over Taiwan. These concerns did not acquire the same momentum as those of Russia, however.

      Until 1990 the Cold War had provided a clear strategic context for the development of nuclear weapons and thoughts about their employment. The end of the Cold War did not mean the end of the nuclear age. While the major powers were content to keep their nuclear capabilities at the margins of international affairs, new uncertainties revolved around how lesser powers might exploit this terrifying destructive capability.

Lawrence D. Freedman

Additional Reading
Historical background to contemporary strategic thinking is found in Peter Paret (ed.), Makers of Modern Strategy (1986). An overall survey is John Baylis et al., Strategy in the Contemporary World: An Introduction to Strategic Studies (2002). Lawrence Freedman, The Evolution of Nuclear Strategy, 3rd ed. (2004), summarizes the history of thought on nuclear strategy. Fred Kaplan, The Wizards of Armageddon (1983), is a look at the thinkers and strategists themselves.The classics of postwar strategic thinking include Bernard Brodie, Strategy in the Missile Era (1959); Herman Kahn, On Thermonuclear War, 2nd ed. (1961, reprinted 1978), and On Escalation: Metaphors and Scenarios (1965, reprinted 1986); and Thomas C. Schelling, The Strategy of Conflict (1960, reprinted 1980), and Arms and Influence (1966, reprinted 1976). Among later contributions, Edward N. Luttwak, Strategy: The Logic of War and Peace, 2nd ed. (2002), is a complex scholarly treatment of strategy as a system of thought; and Colin Gray, Modern Strategy (1999), provides a challenging critique of contemporary thinking.Guides to theories of deterrence are found in Patrick M. Morgan, Deterrence Now (2003); and Lawrence Freedman, Deterrence (2004). Analyses of deterrence in practice include Alexander L. George and Richard Smoke, Deterrence in American Foreign Policy: Theory and Practice (1974). Paul Bracken, The Command and Control of Nuclear Forces (1983), is another authoritative treatment; and John J. Mearsheimer, Conventional Deterrence (1983), applies the deterrence theory to land warfare. An analysis of the strategic implications of recent conflicts is found in Rupert Smith, The Utility of Force in the Modern World (2006).Lawrence D. Freedman

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Universalium. 2010.

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