This book, a substantial contribution to the history of the relations between the Soviet Union and the West, explores a period that is in need of attention and utilizes materials that have only recently become available. It will be of value to the historian, the political scientist, and the student of foreign relations. Originally published in 1965. A UNC Press Enduring Edition -- UNC Press Enduring Editions use the latest in digital technology to make available again books from our distinguished backlist that were previously out of print. These editions are published unaltered from the original, and are presented in affordable paperback formats, bringing readers both historical and cultural value.