Overview
The Tehran Conference (codenamed Eureka) was a strategy meeting of Joseph Stalin, Franklin D. Roosevelt, and Winston Churchill from 28 November to 1 December 1943, after the Anglo-Soviet invasion of Iran. It was held at the Soviet Union's embassy at Tehran in Iran. It was the first of the World War II conferences of the "Big Three" Allied leaders (the Soviet Union, the United States, and the United Kingdom) and closely followed the Cairo Conference, which had taken place on 22–26 November 1943, and preceded the 1945 Yalta and Potsdam conferences. Although the three leaders arrived with differing objectives, the main outcome of the Tehran Conference was the Western Allies' commitment to open a second front against Nazi Germany. The conference also addressed the 'Big Three' Allies' relations with Turkey and Iran, operations in Yugoslavia and against Japan, and the envisaged postwar settlement. A separate contract signed at the conference pledged the Big Three to recognize Iranian independence.
Background
Once the German-Soviet War broke out in June 1941, Churchill offered assistance to the Soviets, and an agreement to that effect was signed on 12 July 1941. However, Churchill, in a spoken radio transmission announcing the alliance with the Soviets, reminded listeners that the alliance would not change his stance against communism.
Delegations had traveled between London and Moscow to arrange the implementation of that support, and when the United States joined the war in December 1941, the delegations met in Washington as well. A Combined Chiefs of Staff committee was created to co-ordinate British and American operations and their support to the Soviets. The consequences of a global war, the absence of a unified Allied strategy, and the complexity of allocating resources between Europe and Asia had not yet been sorted out, which soon gave rise to mutual suspicions between the Western Allies and the Soviet Union. There was the question of opening a second front to alleviate the German pressure on the Soviet Red Army on the Eastern Front, the question of mutual assistance (since both the United Kingdom and the Soviet Union were looking towards the United States for credit and material support, there was tension between the United States and Britain since the Americans had no desire to prop up the British Empire in the event of an Allied victory).
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