This page is for OCR A-level History Y223, The Cold War in Europe, 1941–1995. The course begins before 1945 because wartime distrust and decisions shaped the peace. Its ending also extends beyond the Soviet collapse to the difficult creation of a new European order.

The starting world: an alliance built from necessity

Britain, the USA and USSR became allies because Nazi Germany threatened them all. Their systems and long-term aims remained different. Stalin remembered Western hostility to the Russian Revolution and resented delays in opening a second front. Western leaders distrusted communist expansion and Stalin’s dictatorship. Cooperation could defeat Hitler without resolving these fears.

Five words to learn first

• Grand Alliance: the wartime partnership of Britain, the USA and USSR.
• Sphere of influence: an area in which a powerful state expects dominant influence.
• Containment: the American policy of preventing further communist expansion.
• Satellite state: a state formally independent but dominated by another power.
• Détente: a deliberate relaxation of international tension.

Small task 1

Why was the Grand Alliance likely to weaken after Nazi Germany’s defeat?

Story 1: from wartime alliance to divided Europe, 1941–1949

At Yalta in February 1945, the allies agreed occupation arrangements for defeated Germany but left important questions unsettled. By Potsdam that summer, Roosevelt had died, Churchill had lost office and Germany was defeated. Arguments intensified over Poland, reparations and the political future of Eastern Europe.

The Soviet army occupied much of Eastern Europe. Communist parties, backed by Moscow, removed rivals and created one-party states. Stalin viewed friendly governments as protection after catastrophic invasions. Western governments saw broken promises and expansion.

In 1947 the Truman Doctrine promised support against communist pressure, while Marshall Aid offered American money for European recovery. Stalin rejected the plan and tightened Soviet-bloc coordination. Germany and Berlin became the centre of conflict. The Western powers combined their zones and introduced currency reform. Stalin’s 1948 blockade of West Berlin failed because the Western allies supplied the city by air. In 1949 two German states emerged and NATO was founded.

Small task 2

Explain why Germany became the most dangerous point of tension by 1948.

You may stop here

The first story is division: Soviet control in the east, American-backed recovery in the west, and Germany split between them.

Story 2: blocs, bombs and challenges to Soviet control, 1949–1961

The USSR tested an atomic bomb in 1949. Both sides built larger nuclear arsenals, and military alliances hardened: NATO in the west and the Warsaw Pact from 1955 in the east. Nuclear weapons made total war more destructive while encouraging both sides to avoid direct battle.

Stalin died in 1953. Khrushchev criticised parts of Stalin’s rule and spoke of peaceful coexistence, raising hopes of change. In East Germany in 1953 and Hungary in 1956, protest challenged communist governments. Soviet force crushed both. The lesson was stark: limited reform might be discussed, but leaving the Soviet sphere would not be allowed.

Berlin exposed the weakness of East Germany because citizens could leave through the divided city. In 1961 East German authorities, supported by Moscow, built the Berlin Wall. It reduced emigration and stabilised the GDR, but advertised the coercion required to maintain division.

Small task 3

Why did Khrushchev’s language of peaceful coexistence not mean freedom for Eastern Europe?

Story 3: crisis, reform and détente, 1961–1979

After the Berlin crisis and the Cuban Missile Crisis, both superpowers had reason to manage nuclear danger. A hotline and arms-control agreements followed. Europe remained divided, but communication improved.

In Czechoslovakia, Alexander Dubček’s 1968 Prague Spring attempted “socialism with a human face”. Warsaw Pact forces invaded. The Brezhnev Doctrine asserted a Soviet right to intervene when communist rule was threatened.

Yet détente developed. West German Chancellor Willy Brandt’s Ostpolitik accepted practical relations with East Germany and Eastern Europe. The 1975 Helsinki Accords recognised European borders while including commitments to human rights. Dissidents later used those promises to challenge communist governments. Arms agreements limited parts of the competition without ending it.

Small task 4

How could the invasion of Czechoslovakia and détente both belong to this period?

Story 4: renewed tension and pressure inside the Soviet bloc, 1979–1985

The Soviet invasion of Afghanistan, NATO concern about Soviet missiles and the deployment of new American missiles in Europe helped end détente. Reagan increased American defence spending and used aggressive anti-Soviet language. Peace movements protested against nuclear weapons, showing that European citizens were not passive spectators.

In Poland, the independent trade union Solidarity mobilised millions. The Polish government imposed martial law in 1981 and suppressed it, but Solidarity survived underground. The USSR did not invade. The bloc still used coercion, yet its confidence and resources were weakening.

Small task 5

Why was Solidarity a deeper challenge than a single street protest?

You may stop here

By 1985 Europe was still divided, but the Soviet bloc faced economic weakness, organised dissent and a costly strategic contest.

Story 5: Gorbachev and the revolutions of 1989

Mikhail Gorbachev became Soviet leader in 1985. He introduced glasnost and perestroika to reform a stagnating system. He negotiated with Reagan and reduced international tension. Most importantly for Eastern Europe, he abandoned the expectation that Soviet troops would rescue failing communist governments.

In 1989 opposition movements and mass demonstrations transformed Poland, Hungary, East Germany, Czechoslovakia, Bulgaria and Romania. The sequence differed in each country; Romania’s revolution was violent, while others were largely peaceful. The Berlin Wall opened on 9 November. These were not simply gifts from Gorbachev: citizens, churches, trade unions and opposition groups had created pressure from below.

Germany reunified in 1990 after negotiation among the two German states and the four former occupying powers. In 1991 the Warsaw Pact dissolved and the USSR collapsed.

Small task 6

Separate the causes of 1989 into two columns: change from Moscow and pressure from Eastern Europeans.

Story 6: a new Europe, 1991–1995

The end of Soviet control did not produce a simple, peaceful finish. New democracies faced economic disruption and difficult political transitions. NATO and the European Community had to decide how to relate to the east. Germany’s reunification altered Europe’s balance.

Yugoslavia broke apart in violent wars driven by nationalism, state collapse and competing leaders. Conflict in Bosnia exposed the difficulty of creating security after the Cold War. By 1995 the old two-bloc system had gone, but Europe’s new order remained unfinished.

Small task 7

Why is 1991 not a sufficient stopping point for this OCR course?

The whole story in one paragraph

Wartime distrust became open rivalry when the defeat of Germany created a struggle over Europe’s future. Soviet-backed communist rule in the east and American-backed reconstruction in the west produced two blocs centred on a divided Germany. Nuclear danger encouraged crisis management and détente without ending coercion. Economic weakness, dissent and Gorbachev’s refusal to use force allowed the revolutions of 1989. Soviet collapse ended the old system, but reunification, transition and war meant that a stable new Europe had not fully emerged by 1995.

Small task 8

Retell the story in six stages, one for each story section above.

Six anchor dates — learn these after the story

• 1945: Yalta, Potsdam and the defeat of Germany.
• 1948–49: Berlin Blockade and Airlift.
• 1956: Hungarian uprising crushed.
• 1961: Berlin Wall built.
• 1968: Prague Spring crushed.
• 1989: Eastern European revolutions and opening of the Berlin Wall.

What this first guide does not yet cover fully

You still need detail on wartime diplomacy, the establishment of each satellite state, both German states, NATO and the Warsaw Pact, nuclear strategy, individual crises and uprisings, summit diplomacy and arms control, Ostpolitik, Helsinki and dissent, Poland, the revolutions of 1989, German reunification, Soviet collapse and European developments to 1995. You also need OCR comparison and essay practice.

You may stop now

If you can explain why Europe divided, how the USSR maintained its bloc, why détente was limited and why 1989 became possible, you have a sound foundation.

How your OCR unit is assessed

• Time: 1 hour.
• Marks: 30.
• Weighting: 15% of the A level.
• Question route: choose one of two question sets. Answer its 10-mark comparison question and its 20-mark essay.

Specification source

Mapped to the OCR A-level History A specification, version available in July 2026.