[Viliam1234]

> However with hindsight we now know the real plan of the Soviet Union - it never was to help Europe, but to conquer it.

I think you don't even need the hindsight, just look at history: Soviet Union and Nazi Germany started the war as allies, their first action was splitting Poland... why would anyone expect they would have stopped there?

So, essentially, we are supposed to thank Russians for liberating us from their former allies (and even that only happened because their former allies stabbed them in the back first). I don't know... after the Nazis attacked the Soviet Union, what options had Soviet Union left other than fighting back?

If you become friends with the Nazis, start a war together as allies, then you get betrayed by them, then you defend yourself successfully (with help of many other countries) and finally defeat them... that doesn't really make you a textbook example of a good guy. You need a lot of propaganda to make people forget how this all started.