U.S. President Lyndon B. Johnson calls on Soviets to withdraw from Czechoslovakia. Svoboda flies to Moscow with large delegation of Czechoslovak Communist leaders to negotiate a solution. Czechoslovak leaders sign so-called Moscow protocol which renounces parts of the reform program and agrees to the presence of Soviet troops in Czechoslovakia. Svoboda returns to Prague with Dubcek, Cernik. 14th Party Congress declared invalid, as required by the Moscow protocol.
Censorship is reintroduced in the country.
Czechoslovak student Jan Palach sets himself afire in protest. Dubcek removed as party first secretary, after disturbances that follow Czechoslovak hockey team's victory over a Soviet team in Stockholm. Dubcek replaced by Gustav Husak with full support of the Soviet Union.