From 28 November to 1 December 1943, President Franklin D. Roosevelt, Prime Minister Winston Churchill, and Marshal Joseph Stalin met at Teheran, the capital of Iran, to coordinate Western military plans with those of the Soviet Union. Most important of all, the "big three" drew up the essential victory strategy in Europe, one based on a cross-channel invasion called Operation Overlord and scheduled for May 1944. The plan included a partition of Germany, but left all details to a three-power European Advisory Commission. It granted Stalin's request that Poland's new western border should be at the Oder River and that the eastern one follow the lines drafted by British diplomat Lord Curzon in 1919. The conference tacitly concurred in Stalin's conquests of 1939 and 1940, these being Estonia, Latvia, Lithuania, and a slice of Finland. Stalin reiterated his promise, made in October 1943 at Moscow, to enter the war against Japan upon the defeat of Germany, but he expected compensation in the form of tsarist territories taken by Japan in 1905. On 1 December 1943, the three powers issued a declaration that welcomed potential allies into "a world family of democratic nations" and signed a separate protocol recognizing the "independence, sovereignty, and territorial integrity" of Iran.
Bibliography
Eubank, Keith. Summit at Teheran. New York: Morrow, 1985.
Mayle, Paul D. Eureka Summit: Agreement in Principle and the Big Three at Teheran, 1943. Newark: University of Delaware Press, 1987.
Sainsbury, Keith. The Turning Point: Roosevelt, Stalin, Churchill, and Chiang-Kai-Shek, 1943: The Moscow, Cairo, and Teheran Conferences. Oxford: Oxford University Press, 1985.