Leahy accompanied President Roosevelt as his personal aide to the Yalta Conference in February 1945 . At Yalta Roosevelt met the British Prime Minister Winston Churchill and Soviet leader Joseph Stalin to decide how Europe was to be reorganized after the impending surrender of Germany . Five months later , he went with President Truman to the Potsdam Conference where Truman met with Stalin and the new British Prime Minister Clement Attlee to make decisions about the governance of occupied Germany
Potsdam Conference
Potsdam Conference
William D. Leahy