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“Peace for Our Time”British prime minister Neville Chamberlain speaks at the London airport after a meeting with Adolf Hitler in Munich in September 1938. In return for acceptance of the German annexation of the Czech Sudetenland, Hitler promised to halt foreign aggression, and Chamberlain famously announced that he had negotiated “peace for our time” with the Nazi leader. Less than a year later, Germany invaded Poland and Europe was at war. (Central Press/Getty Images)