President Harry Truman, Marshal Joseph Stalin and Prime Minister Winston Churchill during the Potsdam Conference, 1945

Photograph, World War Two (1939-1945), 1945.

The United States, Soviet Union and Britain met at Potsdam in Germany between 17 July and 2 August 1945 to decide how occupied Germany should be administered and to establish the post-war international order. When Churchill arrived at Potsdam he was still Prime Minister, but when the results of the recent British General Election became known he was replaced as Prime Minister and leader of the British delegation by Clement Attlee.