 Complete the following phrase:  Soviet control of the Eastern Bloc was first tested by the 1948 Czechoslovak coup détat and the TitoStalin split over the direction of the Peoples Federal Republic of Yugoslavia, the Chinese Communist Revolution 1949 and Chinese participation in the Korean War. After Stalins death in 1953, the Korean War ceased with the 1954 Geneva Conference. In Europe, anti-Soviet sentiment provoked the East German uprising of 1953. The break-up of the Eastern Bloc is often attributed to Nikita Khrushchevs anti-Stalinist speech On the Cult of Personality and Its Consequences in 1956. This speech was a factor in the Hungarian Revolution of 1956, which the Soviet Union suppressed. The SinoSoviet split gave North Korea and North Vietnam more independence from both and facilitated the AlbanianSoviet split. The Cuban Missile Crisis preserved the Cuban Revolution from rollback by the United States but Fidel Castro became increasingly independent of Soviet influence afterwards, most notably during the 1975 