In August 1945, the Big Three conference ending World War II was held in Potsdam.

An excerpt from the article 24 facts about Potsdam

It was a conference of three heads of government: the Soviet Union (Joseph Stalin), the United States Harry Truman, and Great Britain (Winston Churchill), whose aim was to determine the procedure for eliminating the effects of World War II, the fate of Germany, developing peace treaties and principles of organizing the post-war world.

The proceedings took place in the Great Hall of the Cecilienhof Palace. The participants sat at a round table with a diameter of 3.05 meters, manufactured by the Moscow company Lux.

During the conference, US President Harry Truman issued a telephone order to drop the Little Boy atomic bomb on Hiroshima.