 In the Americas, the Communist Bloc included the Caribbean Republic of Cuba since 1961 and Grenada.Soviet control of the Eastern Bloc was tested by the 1948 Czechoslovak coup d'état and the Tito–Stalin Split over the direction of the People's Federal Republic of Yugoslavia, the Chinese Communist Revolution (1949), and China's participation in the Korean War.After Stalin's death in 1953, the Korean War ceased with the 1954 Geneva Conference.