Originally published in a single volume in 1972, this book looks at the causes and courses of World War II. This new edition has been revised and extended and is now divided into two companion books. Volume 1, revised by its original author, Peter Calvocoressi, and containing the new introduction to both volumes, deals with the war in the West. Volume 2, revised by John Pritchard in place of the late Guy Wint, covers the greater East Asia and Pacific conflict. This edition takes account of the flood of official archives and personal memoirs that have been made public over the past 15 years. These have necessitated a review, to some extent a reassessment, of the policies of appeasement in Europe in the Thirties and of the direction and motives of Japanese policies in the same feverish decade.