On August 21, 1968, the Soviet and its Warsaw Pact allies invaded the Czechoslovak Republic, after negotiations failed, to prevent Alexander Dubcek´s Prague Spring reforms from continuing. The Soviets mustered thousands of troops from most Warsaw pact countries. The invasion was successful in stopping democratization reforms and strengthening the authority of the Communist Party of Czechoslovakia. and Jitka Vondrová.
Prague Spring was a period of political liberalization in Czechoslovakia during the era of its Soviet domination after World War II. It began on January 5, when reformist Alexander Dubček came to power, and continued until August 21, when the Soviet Union and its Warsaw Pact allies invaded this country to halt the reforms. The Prague Spring reforms were an attempt by Dubček to grant additional rights to citizens as a part of his partial decentralization of the economy and democratization. and Jitka Vondrová.