A similar policy of appeasement towards Stalin, almost to the very end of the blackmailing Allies with the possibility of a separatist peace with Germany, was also applied during the political conferences that established the post-war order of Europe and the world. The first two were still held during the war in Iranian Tehran (at the end of 1943) and Yalta in Crimea (February 1945). The latter in particular has long been in the minds of the inhabitants of Central Europe, becoming a synonym of allied betrayal. Under its provisions, in exchange for the Soviet Union's participation in the war against Japan (allied with the Third Reich), representatives of the United Kingdom and the United States de facto agreed to a new division of spheres of influence in Europe. The countries which the Soviets entered in the course of their pursuit of the retreating German army - Poland, Czechoslovakia, Hungary, Romania, Bulgaria and Yugoslavia - were put under the control of the Soviet Union, under the vague condition of holding free elections in them. UK Prime Minister Winston Churchill and US President Franklin Delano Roosevelt also accepted the shape of the western borders of the Soviet Union, roughly in line with that established by Hitler and Stalin during the previous division of spheres of influence in Europe. This meant that half of the pre-war Poland, Lithuania, Latvia, Estonia, as well as a part of Romania and Finland remained within the borders of the USSR. The post-war division of Germany - with the Soviet occupation zone - was also accepted. Thus, the Soviet Union was not only not condemned in any way for its alliance with the Third Reich, but also significantly enlarged its sphere of influence in relation to 1941.
The Western states were looking at the Soviet Union, unintentionally seeing the atrocities of this regime.