The History Place - This Month in History

Potsdam Conference

Delegates of the Potsdam Conference in Germany prepare to leave the conference room at Cecilienhof Palace. Soviet leader Josef Stalin talks to Secretary of State James Byrnes and President Harry S. Truman (back to camera). Below -- President Truman wrote a note on the back of this photograph describing the conversation that actually took place "In which I tell Stalin we expect to drop the most powerful explosive ever made on the Japanese. He smiled and said he appreciated my telling him -- but he did not know what I'm talking about -- the Atomic Bomb!".