Theres truth and theres propaganda.
Facts support the truth.
I guess what I’m trying to say is truth has a larger component of subjectivism than facts. YMMV
Old Joe Stalin was content to stroll down the garden path with Adolf until Adolf decided he didn’t need a partner anymore. Russia’s contribution to WW2 was minimal at best. They had no strategic air force and no navy. They didn’t fight the Germans or the Japanese in any capacity and battles fronts as did the Western Allies.