Including such epochal leaders as Joseph Stalin, Nikita Krushchev, and Fidel Castro and such pivotal world organizations as the League of Nations, the British Labour Party, and the Union of Democratic Control, this biography of Konni Zilliacus (1894–1967) chronicles the interactions of important policymakers of the 20th century and Zilliacus's efforts to move United Kingdom foreign policy toward peace and conciliation. In 1945 Zilliacus was elected as a Labour Member of Parliament, but for his opposition to Cold War policies and sympathy toward eastern Europe he was expelled for a time. He worked with the Union of Democratic Control, a pressure group that preceded the New Left. In his later years, he opposed the arms race and American intervention in Vietnam.