James F. Byrnes in the context of "Moscow Conference (1945)"

The Potsdam Conference (German: Potsdamer Konferenz) was held at Potsdam in the Soviet occupation zone from 17 July to 2 August 1945, to allow the three leading Allies to plan the postwar peace, while avoiding the mistakes of the Paris Peace Conference of 1919. The participants were the Soviet Union, the United Kingdom, and the United States. They were represented respectively by General Secretary Joseph Stalin, prime ministers Winston Churchill and Clement Attlee, and President Harry S. Truman. They gathered to decide how to administer Germany, which had agreed to an unconditional surrender nine weeks earlier. The goals of the conference also included establishing the postwar order, solving issues on the peace treaty, and countering the effects of the war.

The foreign ministers and aides played key roles: Vyacheslav Molotov, Anthony Eden and Ernest Bevin, and James F. Byrnes. From 17 July to 25 July, nine meetings were held, when the Conference was interrupted for two days, as the results of the British general election were announced. By 28 July, Attlee had defeated Churchill and replaced him as Britain's representative, with Britain's new Secretary of State for Foreign Affairs, Ernest Bevin, replacing Anthony Eden. Four days of further discussion followed. During the conference, there were meetings of the three heads of government with their foreign secretaries, as well as meetings of only the foreign secretaries. Committees that were appointed by the latter for precursory consideration of questions before the conference also met daily. During the Conference, Truman was secretly informed that the Trinity test of the first atomic bomb on 16 July had been successful. He hinted to Stalin that the U.S. was about to use a new kind of weapon against the Japanese. Though this was the first time the Soviets had been officially given information about the atomic bomb, Stalin was already aware of the bomb project, having learned about it through espionage long before.

Joseph Edward Davies (November 29, 1876 – May 9, 1958) was an American lawyer and diplomat. He was appointed by President Woodrow Wilson in 1915 to be the first chairman of the Federal Trade Commission. From 1936 to 1938, Davies was the second-ever United States Ambassador to the Soviet Union. His book about the experience, Mission to Moscow, and its subsequent film adaptation, made him widely known.

After his posting in the USSR, Davies became U.S. Ambassador to Belgium and Luxembourg. From 1939 to 1941, he was special assistant to Secretary of State Cordell Hull, in charge of War Emergency Problems and Policies. From 1942 through 1946, Davies was chairman of the President's War Relief Control Board. He was also special advisor to President Harry Truman and Secretary of State James F. Byrnes with rank of Ambassador at the Potsdam Conference in 1945.