Your knowledge is somewhat askew: Hitler was not present at the Yalta conference - it was a discussion between Alliedleaders.
Roosevelt, Stalin & Churchill were the "Big Three".
FDR
Churchill, Stalin and Roosevelt
Yalta
Soviet Union
The Yalta Conference .
FDR
Churchill, Stalin and Roosevelt
Hitler
Yalta
Yalta Conference
Yalta or Potsdam.
Yalta
February 4-11, 1945.
Soviet Union
yalta conference
The Yalta Conference .
The Yalta Conference .