The Soviet Union played a major role; the vast majority of Axis forces were engaged against Russia for most of the war. The Russians killed more German soldiers than all the other Allies combined.
Yes
Korea did not fight in world war 2. So the answer is no.
The USSR by invading country's and not leaving them after the war.
USSR truly entered the war with the invasion of Russia. They were wasting the time with the Russo-Finnish war.
China, USA and USSR
Germany and USSR
joseph stalin
USSR and america
USSR and USA.
Soviet Russia
US and USSR
USA and USSR