- At the end of WWII, the Allied powers met at conferences like Potsdam and Tehran to determine the post-war order and borders in Europe. Stalin pushed for Soviet control over Eastern Europe while Roosevelt and Churchill reluctantly agreed in return for Soviet assistance against Germany.
- As the war continued, the Soviet Union began occupying Eastern European countries and suffered tremendous losses pushing back the German invasion. By 1945, the Soviets controlled much of Eastern Europe on the ground.
- After Germany's surrender, Europe was divided between Western democracies and Soviet-controlled Eastern bloc countries, setting the stage for the Cold War.