Crises in Europe: Hungary, Berlin and the Prague Spring

History · A Level: The globalisation of the Cold War, 1950-1975 (exams to Nov 2026). The idea in plain words, the rules to remember, the mistake to avoid and a worked example, written and checked by Mega Lecture.

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The idea

These three crises show the limits of the thaw. The USSR would allow some change in Eastern Europe but would not let a country leave its bloc or end one-party rule. In Hungary in 1956 and Czechoslovakia in 1968, tanks ended reform.

Berlin was different because the superpowers faced each other directly. Skilled East Germans were escaping through West Berlin, and Khrushchev's threats failed to move the West. The Berlin Wall stopped the flow.

Each time the West protested but did not fight. In practice both sides accepted the other's sphere in Europe, which the Brezhnev Doctrine later stated openly for the Soviet bloc.

Rules to remember

Hungary, 1956: Imre Nagy announced that Hungary would leave the Warsaw Pact and become neutral; Soviet forces attacked on 4 November and Kádár was installed.
The West did not act: the risk of nuclear war was too great and Britain and France were busy with the Suez crisis.
Hungary showed that American talk of 'rolling back' communism was not backed by action.
November 1958: Khrushchev demanded that Western forces leave West Berlin within six months and that it become a 'free city'.
Berlin Wall: building began on 13 August 1961 to stop East Germans fleeing to the West.
Prague Spring, 1968: Dubček's 'socialism with a human face' meant less censorship and more freedom, while staying communist and in the Warsaw Pact.
August 1968: Warsaw Pact forces invaded; Romania refused to take part. Brezhnev Doctrine: the USSR could intervene wherever socialism was threatened in a bloc country.

Common mistake

Do not say Dubček tried to leave the Warsaw Pact. That was Nagy in 1956; Dubček promised to stay in the Pact, yet the USSR invaded anyway because it feared reform would spread.

Worked example

Why did the Berlin Wall reduce tension between the superpowers, even though the West condemned it?

The refugee drain had threatened to collapse East Germany, which made Khrushchev press hard on West Berlin.
The Wall ended the drain without touching Western rights in West Berlin.
Khrushchev no longer needed to force the West out, and Kennedy had no reason to fight over a wall built on the Eastern side.

Answer: It solved the Soviet problem without challenging the West directly, so Berlin stopped being a likely cause of war.

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