The Confrontation Begins: Potsdam.

Sources:

Gar Alperovitz, Atomic Diplomacy: Hiroshima and Potsdam (New York: Simon & Schuster, 1965);

John Lewis Gaddis, The United States and the Origins of the Cold War, 1941-1947 (New York: Columbia University Press, 1972);

Thomas McCormick, America's Half-Century: United States Foreign Policy in the Cold War (Baltimore: Johns Hopkins University Press, 1989);

Daniel Yergin, Shattered Peace: The Origins of the Cold War and the National Security State (Boston: Houghton Mifflin, 1977).