The Potsdam Conference was held from July to August 1945 , which included the participation of Clement Attlee ( who had replaced Churchill as Prime Minister ) and President Harry S Truman ( representing the United States after Roosevelt 's death ) . At Potsdam , the Soviets denied claims that they were interfering in the affairs of Romania , Bulgaria and Hungary . The conference resulted in ( 1 ) the Potsdam Declaration regarding the surrender of Japan , and ( 2 ) the Potsdam Agreement regarding the Soviet annexation of former Polish territory east of the Curzon Line , and , provisions , to be addressed in an eventual Final Treaty ending World War II , for the annexation of parts of Germany east of the Oder-Neisse line into Poland , and northern East Prussia into the Soviet Union
Potsdam Conference
Potsdam Conference
Yalta Conference