This brilliant new work by the author of the best-selling Five Days in London, May 1940 is an unparalleled drama of two great leaders confronting each other in June 1941. It describes Hitler and Stalin’s strange, calculating, and miscalculating relationship before the German invasion of Soviet Russia, with its gigantic (and unintended) consequences. John Lukacs questions many long-held beliefs; he suggests, for example, that among other things Hitler’s...