Not saying that's a stupid question but....The USSR were the people who won the War for us. They attacked Berlin and took it and ended WWII and they liberated many country's from Nazi rule.
It was invaded by Germany in the winter wars with the USSR...
To stop the spread of Communism from the USSR
The involvement of Germany, Italy, France, Britain, Russia/USSR, and the United States. Also, Europe was the main theater of war in both conflicts.
Yes
rebuild, it continued to spread and support communism, had the cold war with the USA and its allies, which included involvement in Korean, Vietnamese, Afghanistan( the soviet one)... Wars, the space programs, ...
Increased involvement in the war
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.
the cause
1941
There was none....
they were a allie.