Oh, this is not a point of blaming and finger pointing, looking for excuses why the communists are not to blame(are they ever?). It is to illustrate the very simple fact that the soviet union was an imperialist, expansive and warmongering state and one of the direct initiators of WWII - contrary to the usual soviet-russian victim narrative. Not that we would not know it in the retrospective looking at the soviet occupation of half of europe.