The Catholic Church and the various communist governments of Europe have been vitally involved in the process of detente, moving from the silence of the Cold War to the stage of dialogue despite the persistence of religious persecution in the communist world. In this detailed study of recent developments, Professor Dunn discusses the motivating factors in papal-communist relations and chronicles the major events in détente policy in the Soviet Union and those countries of Eastern Europe—Poland, Hungary, Czechoslovakia, and Yugo-slavia—Where the Catholic Church is at least nominally the religion of 30% or more of the population.