On August 23, 1939–shortly before World War II (1939-45) broke out in Europe–enemies Nazi Germany and the Soviet Union surprised the world by signing the German-Soviet Nonaggression Pact, in which the two countries agreed to take no military action against each other for the next 10 years. With Europe on the brink of another major war, Soviet leader Joseph Stalin (1879-1953) viewed the pact as a way to keep his nation on peaceful terms with Germany, while giving him time to build up the Soviet military.
