When Truman informed Stalin of the atomic bomb, he stated that the United States had “a new weapon of unusual destructive force”, but that Stalin had full pity for the development of the atomic bomb from Soviet spy networks in the Manhattan Project and he told Truman at the conference that he hoped Truman would “use it well against the Japanese.”  The agreement was presented as a communiqué and was not a peace treaty between the peoples, although it created the fait accompli. It was replaced by the Treaty on the Definitive Regime, signed on 12 September 1990, in accordance with Germany. US President Franklin D. Roosevelt was dead and replaced by his Vice President Harry S Truman. While Roosevelt was willing to work with Stalin, especially because he needed the USSR to join the war against Japan, Truman made little mystery of his aversion to communism and to Stalin himself. Truman realized that he was tired of observing the Soviets, and that the only language Stalin understood was how many armed divisions did they have? At the conference, Truman called Stalin a “powerful new weapon” unspecified. Towards the end of the conference, on 26 July, potsdam`s declaration issued an ultimatum to Japan to surrender unconditionally or to face the “rapid and total destruction” that the new bomb did not mention, but promised that “it was not the intention to enslave Japan.” The Soviet Union did not participate in this declaration, as it was still neutral in the war against Japan. Japanese Prime Minister Kantaré Suzuki did not respond, which was seen as a sign that the Japanese Empire had ignored the ultimatum.  Subsequently, the United States dropped atomic bombs on Hiroshima on August 6, 1945 and nagasaki on August 9, 1945. The justifications cited were that both cities were legitimate military targets and that it was necessary to quickly end the war and preserve American life. When the conference ended on August 2, 1945, the situation was where it was before the meeting.
There would be no other war conferences. Four days after the end of the conference, the United States launched a nuclear bomb on Hiroshima in Japan. On 9 August, another bomb was dropped on Nagasaki. The Second World War officially ended on August 14, 1945. After the end of the Second World War in Europe (1939-1945) and the decisions of previous conferences in Tehran, Casablanca and Yalta, the Allies had taken the highest authority over Germany by the Berlin Declaration of 5 June 1945. At the conference of the three powers in Berlin (formal title of the Potsdam Conference) from 17 July to 2 August 1945, they approved and adopted the amstbiss of 1 August 1945. The signatories were Secretary General Joseph Stalin, President Harry S. Truman and Prime Minister Clement Attlee, who had replaced Winston Churchill as the United Kingdom`s representative following the 1945 British general election.
The three powers also agreed to invite France and China to participate, as members of the Council of Foreign Ministers, which was established for the agreement.