The Cold War

The first principle

The Cold War was a rivalry between two superpowers that could not fight each other directly. The United States (US) and the Union of Soviet Socialist Republics (USSR) stood for opposed ideas of how society should be organised, each feared the other would expand, and after 1949 both had nuclear weapons that made a direct war suicidal. So the rivalry was fought through alliances, an arms race, propaganda, aid and proxy wars in the Third World. It ended not on a battlefield but when the Soviet system could no longer compete economically and lost the will to hold its empire.

The core

Origins, 1945 to 1947

• Ideological rivalry. Liberal capitalism and Soviet communism each claimed to be the future of humanity, and each read the other's moves as part of a plan for world domination.
• Yalta and Potsdam, 1945. The Allies agreed to divide Germany into zones and promised free elections in liberated Europe, but differed on what "free" meant, above all in Poland.
• Soviet control of Eastern Europe. Stalin, invaded twice through Poland in a generation, wanted friendly governments on his western border; by 1948 communist regimes ruled Poland, Hungary, Romania, Bulgaria and Czechoslovakia. Churchill described an "iron curtain" descending across Europe in his Fulton speech of March 1946.
• Truman Doctrine and Marshall Plan, 1947. In March 1947 President Truman promised support to free peoples resisting subjugation, starting with Greece and Turkey; this was the policy of containment. The Marshall Plan gave Western Europe about 13 billion dollars from 1948 to 1952 to rebuild economies where poverty might breed communism.

Blocs

• The Berlin blockade of 1948 to 1949 led to the North Atlantic Treaty Organization (NATO) in April 1949, whose Article 5 treats an attack on one member as an attack on all. Germany was split into a western Federal Republic and an eastern Democratic Republic the same year.
• West Germany joined NATO in 1955, and the USSR answered with the Warsaw Pact. The US also built a ring of alliances in Asia, among them the South East Asia Treaty Organization (SEATO, 1954) and the Baghdad Pact (1955), which Pakistan joined.

Flashpoints

• Berlin. The blockade was beaten by an airlift, and in August 1961 East Germany built the Wall to stop the flight of its people to the West.
• Korea, 1950 to 1953. North Korea invaded the South; a UN force led by the US, then Chinese troops, joined in, and the war ended in an armistice near the 38th parallel where it began.
• Cuba, 1962. Soviet missiles in Cuba brought the world closer to nuclear war than at any other time; Khrushchev withdrew them in return for a US pledge not to invade Cuba and the quiet removal of US missiles from Turkey.
• Vietnam. The US fought from 1965 to 1973 to save South Vietnam and failed; Saigon fell in 1975.
• Afghanistan, 1979 to 1989. The Soviet invasion ended détente and became the USSR's own costly war, while the US armed the mujahideen through Pakistan.

Dimensions

• Military. The arms race was driven by the security dilemma: each side's defence looked like a threat to the other. Its logic of deterrence, mutually assured destruction, prevented a war in Europe but at the price of permanent danger.
• Diplomatic. After Cuba both sides sought rules: the hotline and the Partial Test Ban Treaty (1963), the Nuclear Non Proliferation Treaty (NPT, 1968), and in the period of détente the first Strategic Arms Limitation Talks agreement (SALT I, 1972) and the Helsinki Final Act (1975).
• Economic and technological. The rivalry drove the space race, from Sputnik in 1957 to the Moon landing in 1969, and huge defence spending that the Soviet economy could afford far less than the American one.
• Third World. Newly independent states were courted with aid and arms, but many became battlegrounds of proxy wars.

In practice

Non alignment and India's place

• Non alignment meant keeping the freedom to judge each issue on its merits, not neutrality. Jawaharlal Nehru argued that a poor, newly free country needed peace, aid from both sides and an independent voice more than membership of a bloc.
• The Asian African Conference at Bandung (1955) gathered 29 states; the Non Aligned Movement (NAM) was founded at Belgrade in 1961 by 25 states, led by Nehru, Tito, Nasser, Sukarno and Nkrumah.
• India mediated where it could: it chaired the Neutral Nations Repatriation Commission in Korea (1953) and the international commissions in Indochina (1954). Its critics noted a softer line on Soviet intervention in Hungary (1956) than on the Anglo French attack on Suez the same year.
• The US arming of Pakistan through its alliances, and the US tilt during the 1971 war, pushed India closer to Moscow, formalised in the Indo Soviet Treaty of Peace, Friendship and Cooperation of August 1971.

How the Cold War ended

• By the 1980s the Soviet economy was stagnating, burdened by defence spending and the war in Afghanistan. Mikhail Gorbachev, leader from 1985, introduced glasnost (openness) and perestroika (restructuring) to revive it, and signed the Intermediate Range Nuclear Forces (INF) Treaty with the US in 1987.
• When he made clear that Moscow would not use force to save the regimes of Eastern Europe, they fell one after another in 1989; the Berlin Wall was opened on 9 November 1989 and Germany was reunited in October 1990.
• Openness released nationalism in the Soviet republics. After a failed hardline coup in August 1991, the USSR was dissolved in December 1991 into 15 states.

Issues and way forward

• Who was to blame? Orthodox historians blamed Soviet expansion; revisionists blamed American economic interests and atomic diplomacy; post revisionists, such as John Lewis Gaddis, see mutual misperception, with Stalin's rule making compromise hardest. Soviet archives opened after 1991 support a mixed view.
• Was it a "long peace"? There was no war between the great powers for over four decades, but millions died in Korea, Vietnam, Afghanistan and African proxy wars, so the peace was real only in Europe.
• The unipolar moment. The 1990s left the US as the only superpower. NATO expanded from 16 members to 32, taking in former Warsaw Pact states and, after Russia's invasion of Ukraine in 2022, Finland and Sweden. Russia sees this expansion as a broken understanding; NATO argues that sovereign states chose to join. The conflict in Ukraine has its roots in this dispute over Europe's post Cold War order.
• The nuclear order. Arsenals are about a sixth of their peak, but the INF Treaty collapsed in 2019, Russia suspended New START in 2023, and China is expanding its arsenal. The lesson of Cuba is that rivals need rules and channels of communication before a crisis, not during it.
• India today. Non alignment has evolved into strategic autonomy: India partners the US in the Quad, keeps its defence and energy ties with Russia, and engages the Global South, choosing partners issue by issue as Nehru intended.

Common confusions

• Truman Doctrine and Marshall Plan. The Doctrine (March 1947) was a political and military pledge of support; the Plan (June 1947) was economic aid for recovery.
• Berlin blockade and Berlin Wall. The blockade (1948 to 1949) cut road and rail access to West Berlin; the Wall (1961) stopped East Germans leaving.
• Non alignment and neutrality. A neutral state such as Switzerland stays out of all conflicts; a non aligned state stays out of blocs but takes positions on issues.
• Glasnost and perestroika. Glasnost was openness in speech and media; perestroika was restructuring of the economy.

For the exam

• Keyword bank: containment, Iron Curtain, Truman Doctrine, Marshall Plan, NATO, Warsaw Pact, proxy war, deterrence, mutually assured destruction, détente, non alignment, Bandung, glasnost, perestroika, unipolar moment, strategic autonomy.
• Previous year questions: Practise the previous year questions on this topic →
• Use in an answer:
  • Introduction (data): At the height of the Cold War in 1986 the world held about 70,000 nuclear warheads, enough to end civilisation many times over, yet the two superpowers never fought each other directly.
  • Introduction (judgement, quote or report): Churchill's warning in 1946 that an "iron curtain" had descended across Europe captured how quickly wartime allies became rivals.
  • Conclusion: The Cold War ended with the collapse of the Soviet system, but its legacies, from divided Korea to the dispute over NATO's expansion, still shape world politics.
  • Conclusion: India's non alignment, now strategic autonomy, shows that a developing country can keep its freedom of choice in a world of great power rivalry.