The "Cold War" .
Yes
They were called allies. The USA, USSR and United Kingdom were called the BIG THREE.
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
joseph stalin
USSR and america
Germany and USSR
USSR and USA.
US and USSR