By what measure do you determine that Stalin was a "worse monster" than Hitler?
More total mass murder to his name, exporting evil ideology to a larger part of the world, running a much larger system of concentration camps ... if that's not enough for you, too bad.
" By what measure do you determine that Stalin was a "worse monster" than Hitler?"
The only one I can think of is that by winning WWII stalin would become far stronger than hitler ever was.