Despite many differences of opinion, the Allied leaders managed to reach some agreements in Potsdam. For example, negotiators confirmed the status of a demilitarized and disarmed Germany under four zones of Allied occupation. According to the minutes of the conference, there should be «complete indignation and demilitarization of Germany»; all aspects of German industry that could be used for military purposes had to be dismantled; all German military and paramilitary forces should be eliminated; and the production of all military equipment in Germany was prohibited. In addition, German society was to be democratically restructured by repealing all discriminatory laws of the Nazi era and by arresting and trial germans as «war criminals.» In July 1945, the United States managed to detonate an atomic bomb at its test site in the New Mexico desert. When Truman was first informed of the experiment`s success, he would have noticed: if it works. I`m sure I`ll have a hammer on these guys. In Potsdam, Truman decided to inform Stalin that the United States had a new weapon of unusual destructive power. Although Stalin already knew the details of the Manhattan Project through his spy networks, he could complain about this treatment and the fact that there were secrets between supposed allies. The Potsdam Conference broke the war alliance between the United States and the USSR. There were several reasons for this: despite many differences of opinion, the British delegation, Stalin and Truman were able to conclude some agreements in Potsdam. Truman, accompanied by his new Secretary of State, James Byrnes. Halfway through the conference, the results of the British general election on 5 July were announced and Churchill and Anthony Eden were replaced by the new Labour Prime Minister Clement Attlee and his Foreign Secretary Ernest Bevin.
Only the main Soviet delegates, Joseph Stalin and Vyacheslav Molotov, remained the same as at the Kanta conference. The Potsdam Conference is perhaps best known for President Truman`s July 24, 1945 conversation with Stalin, during which the president informed the Soviet leader that the United States had succeeded in detonating the first atomic bomb on July 16, 1945. .