Who was the allied leader of soviet during World War 2?

The Allied leader of the Soviet Union during World War II was Joseph Stalin. As General Secretary of the Communist Party and Premier, he played a crucial role in the Soviet war effort against Nazi Germany, particularly after the German invasion in 1941. Stalin's leadership was marked by both military strategy and significant political repression within the Soviet Union. He was a key figure in the Allied discussions and decisions that shaped the war's outcome.