In February 1945 , Joseph Stalin , Winston Churchill and Franklin D. Roosevelt held the Yalta Conference . The future of Poland was one of the main topics that was deliberated upon . Stalin claimed that only a strong , pro-Soviet government in Poland would be able to guarantee the security of the Soviet Union . As a result of the conference , the Allies agreed to withdraw their recognition of the Polish Government in Exile , after the formation of a new government on Polish territory
Yalta Conference
Yalta Conference
Władysław Raczkiewicz