"Drawing on a wealth of previously unexamined material, this staggering account sheds new light on the responsibility of England and France for the dire consequences of this landmark agreement. On returning from Germany on 30 September 1938 after his agreement with Hitler on the carve-up of Czechoslovakia, Neville Chamberlain addressed the British crowds: "My good friends ... I believe it is peace for our time. We thank you from the bottom of our...