Winston Churchill, who had served most of the war as British Prime Minister in a coalition government, was replaced by Clement Attlee during the conference. Since the early 1940s, Churchills had a Soviet policy that was very different from Roosevelt`s and regarded Stalin as an “evil tyrant” who led an abominable system.  General elections were held in the United Kingdom on 5 July 1945, but the results were delayed to allow the counting of votes of military personnel in their constituencies. The result was known at the conference, when Attlee became the new Prime Minister. At the end of the conference, the three heads of government agreed on the following measures. All other issues should be resolved before the final peace conference, which should be convened as soon as possible. France, which had been excluded from the conference, opposed the implementation of the Potsdam agreements in its zone of occupation. In particular, the French refused to relocate Germans expelled from the east. Moreover, the French would not have accepted any obligation to comply with the Potsdam agreements in the procedures of the Allied Control Council; In particular, they reserved the right to block proposals to create common policies and institutions throughout Germany and anything that could lead to the final formation of a single German government.  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.