The cover image anchors this chapter summary in Kissinger’s larger study of diplomacy and international order.
In 1994, Henry Kissinger published the book Diplomacy. He was a renowned scholar and diplomat who served as the United States National Security Advisor and Secretary of State. His book provides an extensive sweep of the history of foreign affairs and the art of diplomacy, with a particular focus on the 20th century and the Western World. Kissinger, known for his alignment with the realist school of international relations, inquires into the concepts of the balance of power, raison d'État, and Realpolitik across different eras.
His work has been widely praised for its scope and intricate detail. Yet, it has also faced criticism for its focus on individuals over structural forces, and for presenting a reductive view of history. Also, critics have also pointed out that the book focuses excessively on Kissinger's individual role in events, potentially overstating his impact. In any case, his ideas are worthy of consideration.
This article presents a summary of Kissinger's ideas in the twenty-eighth chapter of his book, called "Foreign Policy as Geopolitics: Nixon’s Triangular Diplomacy".
You can find all available summaries of this book, or you can read the summary from the previous chapter of the book, by clicking these links.
From dominance to sustainable leadership
Kissinger frames Nixon’s foreign policy as a response to two related changes in the late 1960s. First, the United States was trying to end its involvement in Vietnam without losing its global standing. Second, even without the trauma of Vietnam, the foundations of postwar American predominance had begun to weaken. The United States no longer possessed overwhelming nuclear superiority, and its economic pre-eminence was being challenged by the very allies it had helped rebuild, particularly Europe and Japan. Hence, the problem was not simply how to leave Indochina. It was how to define a role between abdication and overextension.
At the same time, the Cold War world was becoming more flexible than earlier American doctrine had assumed. The ideological appeal of communism had suffered from Khrushchev’s 1956 revelations about Stalin and from the Soviet invasion of Czechoslovakia in 1968. More consequentially, the split between China and the Soviet Union weakened Moscow’s claim to lead a united communist bloc. For Kissinger, these fissures created diplomatic possibilities that a rigid view of communism as a single monolith could not exploit.
Nixon, in this account, inherited a country close to domestic breakdown and deeply frustrated by the costs of global activism. Kissinger portrays him as personally difficult, suspicious, insecure, and often ungenerous, yet at the same time as unusually knowledgeable about international affairs and exceptionally alert to geopolitical relationships. Nixon lacked the historical range of Churchill or de Gaulle. He still grasped power relationships quickly and focused his foreign-policy thinking on the American interest. In Kissinger’s judgment, Nixon’s domestic political instincts could be distorted by resentment and ambition, whereas his strategic instincts in foreign affairs were far more disciplined.
The contrast with Wilsonian internationalism is central to the chapter. Wilson had imagined a world moving toward peace, democracy, and collective security, with the United States helping that movement along. Nixon saw a harsher world of friends, adversaries, cooperation, and conflict. Peace was not the natural condition of international life; it was a fragile result of constant effort. Consequently, Nixon believed that stability depended on a balance of power among major centers: the United States, Europe, the Soviet Union, China, and Japan. In his view, a strong United States was a condition of equilibrium.
This realist outlook did not eliminate Nixon’s attachment to American exceptionalism. Kissinger stresses the paradox that Nixon admired Woodrow Wilson and often used Wilsonian language about destiny, spiritual leadership, and the peaceful purposes of American power. The result was an unusual synthesis. Nixon invoked idealist rhetoric to explain America’s purpose, but he relied on national interest to guide tactics. He shared the belief that the United States had an indispensable international role, yet he also believed that other states expected calculability, not altruism. The task, as he understood it, was to preserve an idealistic nation’s world role by making that role sustainable.
The Nixon Doctrine and the limits of intervention
Nixon first stated his new approach in Guam on July 25, 1969, at the beginning of a world trip that followed the Apollo 11 splashdown. The statement began as an improvised formulation and became the Nixon Doctrine after being elaborated later in 1969 and in the first annual presidential foreign-policy report in February 1970. Its purpose was to prevent another Korea or Vietnam, where the United States had fought major wars in areas not covered by formal alliances.
The doctrine contained three principles. The United States would honor its treaty commitments. It would provide a nuclear shield when a nuclear power threatened an ally or a country considered vital to American security. In cases of non-nuclear aggression, however, the threatened country would have to assume primary responsibility for providing manpower for its own defense. In theory, this framework separated indispensable American commitments from local responsibilities and encouraged allies or partners to bear more of their own burdens.
Kissinger immediately emphasizes the doctrine’s ambiguities. A pledge to keep commitments did not explain how commitments would be interpreted, particularly in a nuclear age. The nuclear shield raised further questions: if a country vital to American security were threatened by conventional means, would the United States still act, and if support were automatic under nuclear threat, what practical difference did a formal alliance make? The demand for local manpower likewise created a burden-sharing dilemma. If the national interest required the United States to defend a strategic area, a threatened country might neglect its own defense and still expect rescue.
For this reason, the doctrine mattered most in peripheral crises outside formal alliances and involving Soviet-backed local forces. Kissinger treats it less as a universal guide than as an attempt to formulate a rule against repeating Vietnam. It stated the administration’s desire to avoid both isolation and indiscriminate intervention, but it did not solve the deeper question of how American leaders should decide where interests were vital.
That deeper question required a reassessment of containment itself. Kissinger divides the Cold War debate into three schools. The first, associated with Dean Acheson and John Foster Dulles, treated the Soviet system almost theologically: communist ideology made Moscow permanently aggressive. The second, which Kissinger calls the psychiatric school, treated Soviet behavior as partly a product of insecurity and urged dialogue to strengthen peace-minded forces inside the Kremlin. The third, a newer radical view intensified by Vietnam, argued that communism would collapse from its own expansion and that American resistance only strengthened it. Related convergence theories held that communist and capitalist societies were moving toward similarity, making confrontation unnecessary.
Nixon rejected all three. He did not believe that the United States could wait passively for history to defeat its adversaries, nor did he believe that diplomacy required the internal transformation of the Soviet Union before negotiations could begin. He likewise did not accept the idea that Soviet hostility could be dissolved mainly by reassurance. Instead, he sought to make national interest the organizing principle of American policy. In the 1970 foreign-policy report, the administration argued that commitments should follow from interests rather than define them. This sounded ordinary by European diplomatic standards, but Kissinger presents it as unusual in twentieth-century American presidential rhetoric.
National interest, détente, and linkage
Kissinger is careful to distinguish Nixon’s approach from appeasement or indifference to Soviet expansion. The Nixon administration, he argues, shared the anti-expansionist objectives of earlier containment. It reacted sharply to perceived Soviet moves. These included a possible Soviet naval base in Cuba in 1970, Soviet missiles moving toward the Suez Canal, and Syria’s invasion of Jordan. The list further included the Soviet role in the India-Pakistan War of 1971, Brezhnev’s implied threat to intervene in the Arab-Israeli War in 1973, and later the use of Cuban troops in Angola under the Ford administration. The difference lay in method. Nixon did not require a change in the Soviet domestic system as a precondition for negotiation.
The administration’s concept of détente was therefore neither pure confrontation nor sentimental conciliation. Nixon saw Soviet-American relations as a set of issues with different degrees of possible settlement. Cooperation in one area could be used to influence Soviet conduct in another, provided the issues were genuinely related in practice. Negotiations could give both superpowers breathing room, especially while the United States extricated itself from Vietnam and while the Soviet Union faced an increasingly dangerous confrontation with China. In Kissinger’s interpretation, Nixon believed time favored the United States because Soviet political control and economic vitality would weaken under prolonged peaceful competition.
This strategy produced the controversial idea of linkage. Nixon resisted the assumption that arms control should proceed in isolation from Soviet conduct in Berlin, the Middle East, or Vietnam. In February 1969, he argued that crisis in one region and genuine cooperation in another could not be sustained indefinitely. The point was not to force artificial connections among unrelated matters. Rather, statesmanship required recognizing real connections and creating incentives or penalties that made moderation more attractive than confrontation.
Many officials, arms-control advocates, and Soviet specialists opposed this method. The American foreign-policy bureaucracy, in Kissinger’s view, tended to fragment policy into separate initiatives, each defended by its own specialists and constituencies. Arms controllers wanted early strategic negotiations because they regarded nuclear restraint as urgent in itself. Kremlinologists worried that pressure on Moscow would strengthen Soviet hard-liners. Press leaks and bureaucratic momentum pushed the administration toward Strategic Arms Limitation Talks sooner than Nixon preferred, even as he tried to use the prospect of talks as leverage.
The arms-control debate also reflected deeper Cold War assumptions. During the 1960s and 1970s, strategic thinking focused less on total disarmament than on reducing the risk of surprise attack. Albert Wohlstetter’s 1959 analysis had argued that nuclear forces could be vulnerable if concentrated in ways that allowed a first strike to destroy them before retaliation. This shifted expert attention to first-strike and second-strike capabilities, strategic stability, vulnerability, accuracy, and verification. Yet Kissinger stresses that the technical sophistication of arms control could obscure political reality. Nuclear war would be decided by political leaders under terrifying pressure, not by analysts in seminars, and neither side had operational experience with the full complexity of a large nuclear exchange.
By itself, arms control risked making containment more tolerable without resolving the underlying political conflict. Crises continued from Southeast Asia to the Middle East and Europe, while strategic negotiations offered a way to manage danger without changing the adversarial relationship. Nixon’s linkage policy tried to prevent that separation. At first, the approach had limited success; an effort in 1969 to combine strategic arms discussions with movement on Vietnam failed because the issues moved on different timetables and Hanoi remained intractable. Ultimately, however, linkage became effective because the administration created a more powerful incentive for Soviet moderation: the opening to China.
China and the strategic triangle
For Kissinger, the opening to China was the decisive move that transformed the diplomatic board. If the Soviet Union could no longer assume permanent hostility between Washington and Beijing, Soviet leaders would have to consider that aggressive behavior might drive the United States and China closer together. Improved Sino-American relations therefore became central to Nixon’s Soviet strategy. In the logic of triangular diplomacy, the United States would gain influence by becoming closer to both communist powers than either was to the other.
The policy required overturning two decades of isolation. After the communist victory in China in 1949 and Chinese intervention in the Korean War, American policy had treated Beijing as an enemy to be excluded. Diplomatic contact had dwindled to hostile ambassadorial meetings in Warsaw. During the Cultural Revolution, even that channel was interrupted when nearly all Chinese ambassadors were recalled. American assumptions were also slow to change. Many saw Communist China as more ideological, more revolutionary, and less negotiable than the Soviet Union. Ironically, some Soviet specialists who favored dialogue with Moscow warned Nixon that reaching out to China would provoke Soviet paranoia and endanger Soviet-American relations.
Kissinger argues that European statesmen had understood the opportunity earlier. Adenauer spoke of the Sino-Soviet split in the late 1950s, and de Gaulle saw that Moscow’s dispute with China could make the Soviet Union more interested in cooperation with the West. De Gaulle’s analysis was shrewd, even if France lacked the power to exploit it fully. American policymakers, constrained by ideological habits and by the recent memory of Asian wars, were slower to perceive the strategic significance of the split.
Nixon had already indicated before taking office that China could not remain permanently isolated. Kissinger, writing for Nelson Rockefeller’s 1968 campaign, had also argued that a triangular relationship among Washington, Beijing, and Moscow would improve American options with both communist powers. Still, the immediate opening came less from American design than from China’s fear of the Soviet Union. In spring 1969, clashes along the Ussuri River brought Chinese and Soviet forces into conflict. Washington first assumed Chinese radicalism was responsible, but Soviet behavior soon raised suspicion. Soviet diplomats briefed Washington in unusual detail and asked how the United States would react if the conflict escalated. Intelligence then suggested that the clashes occurred near Soviet supply bases and far from Chinese communications centers, while Soviet forces grew to more than forty divisions along the long Chinese border.
If Moscow were preparing to attack China, Kissinger believed the global balance would face its gravest danger since the Cuban missile crisis. A Soviet attempt to impose the Brezhnev Doctrine on China would subordinate the world’s most populous country to a nuclear superpower and recreate the strategic danger once associated with a unified communist bloc. Therefore, Nixon made two major decisions in summer 1969. He set aside the traditional Sino-American agenda of Taiwan, claims, travel restrictions, and diplomatic grievances, choosing instead to explore whether China and the Soviet Union feared each other more than either feared the United States. He also warned Moscow that the United States would not be indifferent to a Soviet attack on China.
That warning was expressed cautiously but clearly. In September 1969, Undersecretary of State Elliot Richardson stated that the United States sought no exploitation of the Sino-Soviet conflict. He added that Washington would be deeply concerned if it escalated into a major breach of international peace. Kissinger interprets the statement as a classic act of Realpolitik. The United States was signaling possible support for a country with which it had no diplomatic relations, no contact, and a long record of mutual hostility, because China’s independence had become essential to the balance of power.
From cautious signals to the Shanghai Communiqué
The administration reinforced this shift through small unilateral measures and public statements. In July 1969, it eased restrictions on travel to the People’s Republic of China, allowed Americans to bring a limited quantity of Chinese goods into the United States, and permitted limited grain shipments. In August, Secretary of State William Rogers declared in Australia that the United States would welcome a significant Chinese role in Asian and Pacific affairs. That welcome depended on Beijing moving beyond isolation and opening channels of communication. These gestures were modest, but they announced that Washington no longer treated China’s exclusion as a permanent principle.
China was sending signals as well, though many were missed. In April 1969, Lin Piao, soon to be named Mao’s heir, stopped identifying the United States as China’s principal enemy and placed the Soviet Union on a comparable level of threat. Mao had already used journalist Edgar Snow as an indirect channel, including an invitation for Nixon to visit China, but Washington did not recognize Snow as a reliable intermediary and did not receive the message in time. Thus both sides wanted contact before they had an effective channel.
The Warsaw ambassadorial talks resumed in December 1969 after an awkward encounter at a Yugoslav fashion show in Warsaw, where the American ambassador Walter Stoessel tried to approach the Chinese chargé. The talks soon deadlocked because the inherited agenda was too narrow for the geopolitical issues that mattered most. On the American side, consultation with Congress and allies made the process even more cumbersome. When China suspended the talks after the American attack on Cambodian sanctuaries in May 1970, Nixon and Kissinger were not altogether disappointed, because both sides had already begun searching for a more flexible route. Pakistan eventually supplied that channel, leading to Kissinger’s secret trip to Beijing in July 1971.
Kissinger presents the Chinese leaders as especially receptive to Nixon’s conceptual style. Mao, Zhou Enlai, and later Deng Xiaoping were concerned less with technical bargaining than with determining whether interests could be aligned. Mao’s reported distinction between the “small issue” of Taiwan and the “big issue” of the world captured the scale of the discussion. China wanted assurance that the United States would not cooperate with the Soviet Union in applying the Brezhnev Doctrine against Beijing. Nixon wanted to know whether China would help block Soviet expansion. Each side therefore tested the other’s view of the global equilibrium before reducing the relationship to practical concessions.
Kissinger contrasts Chinese and Soviet diplomacy sharply. Soviet negotiators rarely discussed broad concepts; they pressed specific demands with persistence and treated diplomacy as a grinding contest over details. Chinese leaders, by contrast, seemed more interested in confidence and long-term priorities. Mao assured Nixon that China would not use force against Taiwan in the near term and could wait. Zhou, during the drafting of the Shanghai Communiqué, resisted trading offensive phrases mechanically and preferred persuasion about why a phrase should be changed. In Kissinger’s account, this did not reflect sentimental goodwill. It reflected China’s recognition that it needed American confidence more than short-term debating victories.
The Shanghai Communiqué, signed during Nixon’s February 1972 visit, became the roadmap for Sino-American relations. Its unusual feature was that much of it openly stated disagreements over ideology, Vietnam, Taiwan, and world affairs. Precisely because the disagreements were explicit, the areas of agreement carried weight. The two sides affirmed that normalization served the interests of all countries and that both wanted to reduce the danger of military conflict. They also declared that neither would seek hegemony in the Asia-Pacific region, that both opposed any other power’s attempt to establish such hegemony, and that neither would negotiate on behalf of third parties.
Kissinger interprets these clauses as the creation of a tacit alignment against Soviet expansion in Asia. China would not worsen the situations in Indochina or Korea, and neither China nor the United States would collaborate with the Soviet bloc. Since the Soviet Union was the only power capable of dominating Asia, the communiqué amounted to a de facto anti-hegemonic partnership. In February 1973, a further communiqué made the understanding more explicit and more global by moving from opposition to joint resistance against any country’s effort to dominate the world.
A new structure of peace and its limits
The opening to China altered Soviet-American relations more quickly than many specialists had predicted. Critics had warned that improved relations with Beijing would damage relations with Moscow. Instead, after Kissinger’s secret trip to China, the Kremlin stopped stalling on a Nixon-Brezhnev summit and invited Nixon to Moscow. Soviet-American negotiations accelerated once Soviet leaders recognized that attempts to extract unilateral concessions risked leaving them isolated between NATO in the West and China in the East.
This was the practical meaning of triangular diplomacy. The United States did not need to command China or play a simple “China card.” China cooperated because it had its own reasons to fear Soviet expansion, and the American role was to build a framework in which parallel interests could operate. Nixon did not want, moreover, to place the United States unambiguously on China’s side against Moscow. American leverage was strongest when Washington was closer to both communist powers than they were to each other. That position gave Moscow an incentive to moderate crises and gave Beijing an incentive to preserve American goodwill.
Kissinger describes this outcome as a new structure of peace, while acknowledging that the phrase could sound grandiose. The structure rested on incentives rather than trust. Soviet leaders would hesitate to apply pressure below the threshold of general war because doing so might deepen Sino-American cooperation. China, in turn, would avoid actions that endangered American support against Soviet power. The United States would continue negotiating practical issues with Moscow while maintaining a broader conceptual dialogue with Beijing. In this arrangement, détente and the China opening were mutually reinforcing parts of a single geopolitical design.
The final part of the chapter turns from diplomatic achievement to political fragility. Nixon was the first president since Theodore Roosevelt to conduct American foreign policy so explicitly in the language of national interest. The strength of that approach was clarity about power, incentives, and limits. Its weakness was its lack of emotional resonance in a society accustomed to explaining foreign policy through exceptional moral purpose. National interest was not self-evident to American political culture in the way it was to older diplomatic traditions such as those of Britain, France, or China.
Nixon also lacked the political conditions needed to educate the public into this approach. During his first term, Vietnam and protest made any doctrine of anti-communist firmness suspect to many Americans. During his second, Watergate destroyed his authority. Kissinger adds that Nixon’s style was too jarring for American ideological habits. Dulles had dressed realist judgments in moral language, and Reagan later used idealistic rhetoric to support policies that, in operational terms, resembled Nixon’s more than the rhetoric suggested. Nixon, in contrast, was too cerebral and governed at a moment when idealistic language about struggle against communism might have inflamed rather than unified the country.
Consequently, the achievements of Nixon’s diplomacy became easier to take for granted once the dangers it avoided had receded. The opening to China, détente with Moscow, and the resulting shift in the global balance helped move the United States from the apparent weakness of Vietnam into a stronger international position. Yet Vietnam and Watergate prevented the emergence of a lasting consensus around the method that produced those results. The chapter closes with that unresolved tension: Nixon’s triangular diplomacy restored American initiative by using balance-of-power reasoning, but the United States remained divided over whether such realism vindicated its ideals or compromised them.
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