so much they gave much of eastern eroup to them

After Hitler betrayed his alliance with Stalin and invaded ruz-occupied Poland and Belarus, the USSR pushed Hitler back to Berlin and captured every capital city on the way.

If you've read gulag archipelago you might remember Solzhenitsyn recalling how at his gulag prison camp (wasnt he in lefortovo at the time? Can't remember) the Soviets did a celebratory cannon blast every time they captured a capital city. The author remember hearing the cannons and the cellmates guessing - which city would that have been, Warsaw or Bucharest?

After the Nazis fell it was clear that the ruZ did not intend to de-occupy anything, and so the allies had to think the unthinkable, an extension of the war until Americans and Commonwealth troops took Stalingrad?

https://en.wikipedia.org/wiki/Operation_Unthinkable

It was not out of love that the Soviets captured eastern europe but the typical orcish Z thinking, which holds the following. Muscovy, being the lead tax collector for the golden horde among the principalities during the tartar yoke period, is the third Rome, inheritor of the kyivan rus, and a superpower entitled to its sphere of influence.

Actually it's over now: Putin and the siloviki have set the stage for a catastrophic disintegration of Ivan's (and Peter's and Catherine's) bloody empire.