Why Did the Cold War Develop from 45-47?

No issue in twentieth-century American history has aroused more debate than the question of the origins of the Cold War. Some have claimed that Soviet duplicity and expansionism created the international tensions, while others have proposed that American provocations and imperial ambitions were at least equally to blame. Most historians agree both the United States and the Soviet Union contributed to the atmosphere of hostility and suspicions that quickly clouded the peace. At the heart of the rivalry between the United States and the Soviet Union in the 1940s was a fundamental difference in the ways the great powers envisions the postwar world. One vision, first openly outlined in the Atlantic Charter in 1941, was of a world in which nations abandoned their traditional beliefs in military alliances and spheres of influence and governed their relations with one another through democratic processes, with an international organization serving as a arbiter of disputes and the protector of every nation's right of self-determination. That vision appealed to many Americans, including Franklin Roosevelt. The other vision was that of the Soviet Union and to some extent, it gradually became clear, of Great Britain. Both Stalin and Churchill had signed the Atlantic Charter. But Britain had always been uneasy about the implications of the self-determination ideal for its own enormous empire. An the Soviet Union was determined to crease a secure sphere for itself in Central and Eastern Europe as protection against possible future aggression from eh West. Churchill and Stalin tended to envision a postwar structure in which the great powers would control areas of strategic interest to them, in which something vaguely similar to the traditional European balance of power would reemerge. Serious strains had already begun to develop in the alliance with the Soviet Union in January 1943, when Roosevelt and Churchill met in Casablanca, Morocco, to discuss Allied