The Potsdam Conference was held from July 17 to August 2, 1945 in Potsdam Germany. Joseph Stalin, Winston Churchill, and Harry Truman were all at the party. They were all there to decide the punishment for Nazi Germany. They also established post war order and peace treaties. They agreed on dividing Austria and Germany into four zones, punishment for Nazi war criminals, war reparation, and destruction of German war like materials.