This is the first full-length study of relations among the communist states. The study explores the implications of the status of Yugoslavia and China, the significance of the Hungarian revolution and the position of Poland in the Soviet bloc, and clarifies the Khrushchev-Gomulka clash of 1956 and the complex role of Tito. Zbigniew Brzezinski emphasizes the role of ideology and power in the relations among the communist states, contrasting bloc...