Prague Spring Crushed

In the night of 20–21 August 1968, hundreds of thousands of troops from the Soviet Union and several Warsaw Pact allies crossed into Czechoslovakia and brought an end to the reform movement known as the Prague Spring. The invasion showed that Moscow would not tolerate a member of its bloc moving toward a looser, more open form of communism, and it shaped Cold War politics and Eastern European life for two decades.

The roots of the crisis lay in the 1960s, when Czechoslovakia's economy stagnated and pressure grew within the country for change. In January 1968 the Communist Party replaced the hard-line leader Antonín Novotný with Alexander Dubček, a Slovak who promised what he called "socialism with a human face." The party's Action Programme, adopted that spring, pledged to ease censorship, allow greater freedom of speech and assembly, rehabilitate victims of earlier purges, and give economic managers more independence. Newspapers, writers and ordinary citizens took up public debate with an enthusiasm that surprised even the reformers. Dubček insisted the country would remain a communist state and a loyal Warsaw Pact member.

Soviet leaders, led by Leonid Brezhnev, were nonetheless alarmed. They feared that reform might spread to other bloc countries, including Poland and East Germany, and that it could weaken the Soviet security buffer in Central Europe. Meetings through the summer, including talks at Čierna nad Tisou in July, failed to settle the matter. Historians still debate how divided the Soviet leadership was, but by August the decision to intervene had been taken, reportedly encouraged by hard-line Czechoslovak communists who wrote seeking help.

The invasion was swift. Troops from the USSR, Poland, Hungary and Bulgaria took control of the country within days; Romania refused to take part, and East German forces were kept largely out of the operation. The Czechoslovak army was ordered not to resist, so casualties were comparatively limited, though dozens of civilians were killed. Citizens argued with soldiers, painted over road signs and held demonstrations. Dubček and other leaders were taken to Moscow and pressured into signing an agreement that allowed troops to remain.

Dubček stayed in office for a time, but the reforms were gradually undone. In April 1969 he was replaced by Gustáv Husák, who oversaw "normalization," a period of purges, renewed censorship and political conformity. Many Czechs and Slovaks emigrated. Soviet forces stayed in the country until 1991. Abroad, the invasion was justified by what became known in the West as the Brezhnev Doctrine, the claim that the USSR could intervene to defend socialism in allied states. It also cost Moscow credibility among many Western communists. The memory of 1968 remained powerful, and in 1989 Czechoslovakia's Velvet Revolution ended communist rule, with Dubček appearing publicly alongside Václav Havel.