Prague Spring
Reactions to the invasion

In Czechoslovakia, especially in the week following the invasion, popular opposition was expressed in numerous spontaneous acts of nonviolent resistance. Civilians purposely gave wrong directions to invading soldiers, while others identified and followed cars belonging to the secret police. On 16 January 1969, student Jan Palach set himself on fire in Prague's Wenceslas Square to protest against the renewed suppression of free speech.

The generalized resistance caused the Soviet Union to abandon its original plan to oust the First Secretary. Dubček, who had been arrested on the night of 20 August, was taken to Moscow for negotiations. There, under heavy psychological pressure from Soviet politicians, Dubček and all the highest-ranked leaders but František Kriegel signed the Moscow Protocol. It was agreed that Dubček would remain in office and a programme of moderate reform would continue.

On 25 August citizens of the Soviet Union who did not approve of the invasion protested in Red Square; seven protesters opened banners with anti-invasion slogans. The demonstrators were brutally beaten and arrested by security forces, and later punished by a secret tribunal; the protest was dubbed "anti-Soviet" and several people were detained in psychiatric hospitals.

A more pronounced effect took place in Romania, where Nicolae Ceaușescu, General Secretary of the Romanian Communist Party, already a staunch opponent of Soviet influences and a self-declared Dubček supporter, gave a public speech in Bucharest on the day of the invasion, depicting Soviet policies in harsh terms. Albania withdrew from the Warsaw Pact in opposition, calling the invasion an act of " social imperialism ". In Finland, a country under some Soviet political influence, the occupation caused a major scandal.

Like the Italian and French Communist parties, the majority of the Communist Party of Finland denounced the occupation. Nonetheless, Finnish president Urho Kekkonen was the first Western politician to officially visit Czechoslovakia after August 1968; he received the highest Czechoslovak honours from the hands of President Ludvík Svoboda, on 4 October 1969. A schism occurred between the East German Communist Party and the Icelandic Socialist Party because of the latter's disapproval of the invasion and occupation of Czechoslovakia, causing relations between Iceland and East Germany to deteriorate. The Portuguese communist secretary-general Álvaro Cunhal was one of few political leaders from western Europe to have supported the invasion for being counter-revolutionary, along with the Luxembourg party and conservative factions of the Greek party.

Most countries offered only vocal criticism following the invasion. The night of the invasion, Canada, Denmark, France, Paraguay, the United Kingdom, and the United States requested a meeting of the United Nations Security Council. At the meeting, the Czechoslovak ambassador Jan Mužík denounced the invasion. Soviet ambassador Jacob Malik insisted the Warsaw Pact actions were "fraternal assistance" against "antisocial forces".

The British government strongly condemned the Soviet invasion of Czechoslovakia, although it cautiously avoided making any diplomatic moves that may have provoked a Soviet counter-response and a jeopardisation of détente. The United Kingdom's foreign policy toward the Soviet Union was minimally impacted in the long-term, and quickly reverted to the status quo that existed prior to the Prague Spring following the brief period of intense criticism.

One of the nations that most vehemently condemned the invasion was China, which objected furiously to the so-called "Brezhnev Doctrine" that declared the Soviet Union alone had the right to determine what nations were properly Communist and could invade those Communist nations whose communism did not meet the Kremlin's approval. Mao Zedong saw the Brezhnev Doctrine as the ideological basis for a Soviet invasion of China, and launched a massive propaganda campaign condemning the invasion of Czechoslovakia, despite his own earlier opposition to the Prague Spring. Speaking at a banquet at the Romanian embassy in Beijing on 23 August 1968, the Chinese Premier Zhou Enlai denounced the Soviet Union for "fascist politics, great power chauvinism, national egoism and social imperialism", going on to compare the invasion of Czechoslovakia to the American war in Vietnam and more pointedly to the policies of Adolf Hitler towards Czechoslovakia in 1938–39. Zhou ended his speech with a barely veiled call for the people of Czechoslovakia to wage guerrilla war against the Red Army.

The next day, several countries suggested a United Nations resolution condemning the intervention and calling for immediate withdrawal. Eventually, a UN vote was taken with ten members supporting the motion; Algeria, India, and Pakistan abstained; the USSR (with veto power) and Hungary opposed. Canadian delegates immediately introduced another motion asking for a UN representative to travel to Prague and work toward the release of the imprisoned Czechoslovak leaders.

By 26 August, a new Czechoslovak representative requested the whole issue be removed from the Security Council's agenda. Shirley Temple Black visited Prague in August 1968 to prepare for becoming the US Ambassador for reformed Czechoslovakia. However, after the 21 August invasion, she became part of a U.S. Embassy-organized convoy of vehicles that evacuated U.S. citizens from the country. In August 1989, she returned to Prague as U.S. Ambassador, three months before the Velvet Revolution that ended 41 years of Communist rule.
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