Changes

The Casablanca Conference took place just two months after the Anglo-American landings in French North Africa in November 1942. At this meeting, Roosevelt and Churchill focused on coordinating Allied military strategy against the Axis powers over the course of the coming year. They resolved to concentrate their efforts against Germany in the hopes of drawing German forces away from the Eastern Front and to increase shipments of supplies to the Soviet Union. While they would begin concentrating forces in England in preparation for an eventual landing in northern France, they decided that first, they would concentrate their efforts in the Mediterranean by launching an invasion of Sicily and the Italian mainland designed to knock Italy out of the war. They also agreed to strengthen their strategic bombing campaign against Germany. Finally, the leaders agreed on a military effort to eject Japan from Papua New Guinea and to open up new supply lines to China through Japanese-occupied Burma.

====Requirement that AXIS powers unconditionally surrender====

On the final day of the Conference, President Roosevelt announced that he and Churchill had decided that the only way to ensure postwar peace was to adopt a policy of unconditional surrender. The President clearly stated, however, that the policy of unconditional surrender did not entail the destruction of the populations of the Axis powers but rather, “the destruction of the philosophies in those countries which are based on conquest and the subjugation of other people.”

The Soviets, who had long been pushing the Allies to open a second front, agreed to launch another major offensive on the Eastern Front that would divert German troops away from the Allied campaign in northern France. Stalin also agreed in principle that the Soviet Union would declare war against Japan following an Allied victory over Germany. In exchange for a Soviet declaration of war against Japan, Roosevelt conceded to Stalin’s demands for the Kurile Islands and the southern half of Sakhalin, and access to the ice-free ports of Dairen (Dalian) and Port Arthur (Lüshun Port) located on the Liaodong Peninsula in northern China. The exact details concerning this deal were not finalized, however, until the Yalta Conference of 1945.

====Questions regarding post-war Europe are Discussed====

Broader international cooperation also became a central theme of the negotiations at Tehran. Roosevelt and Stalin privately discussed the composition of the United Nations. During the Moscow Conference of the Foreign Ministers in October and November of 1943, the United States, Britain, China, and the Soviet Union had signed a four-power declaration whose fourth point called for the creation of a “general international organization” designed to promote “international peace and security.” At Tehran, Roosevelt outlined for Stalin his vision of the proposed organization in which the future United Nations would be dominated by “four policemen” (the United States, Britain, China, and Soviet Union) who “would have the power to deal immediately with any threat to the peace and any sudden emergency which requires action.”

====The Three Powers agree to ensure Iran's territorial integrity after the War====

Finally, the three leaders issued a “Declaration of the Three Powers Regarding Iran.” Within it, they thanked the Iranian Government for its assistance in the war against Germany and promised to provide it with economic assistance both during and after the war. Most importantly, the U.S., British, and Soviet Governments stated that they all shared a “desire for the maintenance of the independence, sovereignty, and territorial integrity of Iran.”

===Conclusion===

The "Big Three" conferences during the war helped the allies to coordinate with each other and against Germany and Japan. While the conferences allowed the three countries to cooperate with each other, they did not successfully iron out what the post-war world would look like. Unfortunately, the powers would have never been able to come to any meaningful agreements about post-war Europe. Additionally, the Soviet Union had little patience for American and British interference in Eastern Europe. Neither Britain nor the United States was willing to go to war with the USSR as soon as World War II ended to limit the Soviet's territorial aspirations.

* Republished from [https://history.state.gov/| Office of the Historian, United States Department of State]

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