Plenty of people died who were not Russian.
http://en.wikipedia.org/wiki/World_War_II_casualties
US: 418,500 dead
UK: 450,900 dead
France: 567,600 dead
The USSR lost a lot of people, 23,400,000, but it is not clear how many died due to the war and how many died due to Stalin.
And lets not forget the 6 million Jews who were killed by Hitler and his minions.