Conference participants discussed the content and procedures of peace agreements in Europe, but did not seek to draft peace agreements. This task has been entrusted to a Council of Foreign Ministers. The main concerns of the Big Three, their foreign ministers and their collaborators were the direct management of defeated Germany, the delimitation of Poland`s borders, the occupation of Austria, the definition of the Soviet Union`s role in Eastern Europe, the determination of reparations and the continuation of the war against Japan. Potsdam lacked apathy and goodwill, which had largely marked previous war conferences, because each nation was most affected by its own interest, and Churchill was especially wary of Stalin`s motivations and uncompromising position. From 17 July to 2 August 1945, a conference of the heads of state of the USSR, the United States and the United Kingdom was held in Potsdam, a suburb of Berlin, at Cecilienhof Castle. During the event, the problems of the world order were discussed in the post-war period. The Potsdam Conference of 1945 had a great political influence on the fate of post-war Europe and on the question of peace. It was the third and final in the series of conferences of the heads of state and government of the USSR, the United States and the United Kingdom, allies of the Second World War. The main theme on the agenda of the conference was the German question.
Agreement was reached on the maintenance and development of Germany as a single democratic state of peace. In Potsdam, little real progress has been made, beyond an agreement on fulfilling the commitments made in Yalta. In accordance with the decisions of the Crimean Conference of 11 February 1945, the Potsdam Agreements provided for the complete disarmament and demilitarization of Germany; the abolition of the National Socialist Party and its branches; dissolution of all Nazi institutions; Prevention of military and nS activities and propaganda; Passage of war criminals before the International Tribunal; Preparing for the definitive reconstruction of German political life. The Yalta conference granted France an area of occupation within Germany. France participated in the Berlin Declaration and is expected to be a member of the Allied Control Council on an equal footing. However, at the request of the Americans, Charles de Gaulle was not invited to Potsdam, as he had been denied representation in Yalta. The little diplomatic thing was for him a cause of deep and persistent resentment.  The reasons for this omission were the long-standing personal antagonism between Roosevelt and de Gaulle, the continuing quarrels over the French and American zones of occupation, and the expected conflicts of interest over French Indochina.  It also reflected the British and American judgment that the French objectives on many of the conference agenda were probably at odds with the agreed Anglo-American objectives.  When Truman informed Stalin of the atomic bomb, he said 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 the Soviet spy networks in the Manhattan Project, and he told Truman at the conference that he hoped that truman would „use it well against the Japanese“.  Truman was much more suspicious of the Soviets than Roosevelt and increasingly suspicious of Stalin`s intentions.
 Truman and his advisers regarded Soviet action in Eastern Europe as aggressive expansionism, incompatible with the agreements Stalin had been obliged to in Yalta in February.