At the Potsdam conference (I think)
Potsdam Conference
From Stalin, whose troops occupied most of Eastern Europe, Truman demanded that free elections be held in those countries. Unfortunately, the Soviets controlled the governments and ensured that communist puppet parties gained power, leading to the Warsaw Pact and Russian hegemony.
Potsdam
President Harry S Truman
Potsdam of the federal state of Brandenburg in Germany. It was known as the Potsdam conference.
Yes. They were there along with Churchill from Britain.
Freely elected governments
The Potsdam Conference consisted of England/Churchill , Russia/Stalin and US/Truman .
The atomic bomb test
actually, the big three were not at potsdam. by that time FDR had died and was replaced by truman. they were there to discuss post war arrangements.
As Roosevelt died before the Potsdam conference, Truman, his vice president took over.