1941
The leader of the Soviet Union during WW2 was Joseph Stalin.
After the WW2 Soviet Union occupied Romania for 13 years.
Germany
Romania entered in the WW2 (Great Romania was after WW1) because Soviet Union occupied Basarabia and Northern Bukowina.
The Soviet Union was run by Josef Stalin through WW2,his regime started in 1924 after the death of Lenin,and lasted through WW2 until his death of a heart-attack in 1953
Poland was occupied by Soviet Union after WW2
The German invasion of the Soviet Union during WW2 was called Operation Barbarossa.
The United States and the Soviet Union were the Superpowers after World War 2.
Soviet Union
August 9, 1945, but Soviet Union fought with Japan in Soviet-Japanese Border War since 1938. July 29, 1938 – August 11, 1938(Battle of Lake Khasan) and May 11 - September 16, 1939 (Battle of Khalkhin Gol). It's not part of ww2 officialy, but ww2 had already started during it.
the U.S. did not want the Soviet Union and China to enter the war.
Soviet female pilot from the WW2 and the hero of the Soviet Union. Double ace. Killed at the age of 21.