U.S. President and Secretary of State cross Atlantic en route to Berlin Conference. U.S. President Harry S.

U.S. President and Secretary of State cross Atlantic en route to Berlin Conference. U.S. President Harry S. Truman (right) and U.S. Secretary of State James F. Byrnes chat with Captain J.H. Foskett (left) commanding officer of the cruiser U.S.S. Augusta, as they cross the Atlantic en route to the Berlin Conference. On July 16, 1945, meetings of President Truman, British Prime Minister Winston Churchill and Soviet Premier Josef Stalin and the head foreign affairs officials of the three nations started in Potsdam, a suburb of Berlin, Germany.