If by heavy lifting yoh mean being half responsible for starting ww2 by signing the Molotov–Ribbentrop Pact and then helping to invade, rape and murder Poland then yes.
https://en.m.wikipedia.org/wiki/Soviet_invasion_of_Poland
And im sure occupying and raping eastern Europe for half a century with commie tyranny is heavy lifting
If by heavy lifting yoh mean being half responsible for starting ww2 by signing the Molotov–Ribbentrop Pact and then helping to invade, rape and murder Poland then yes. https://en.m.wikipedia.org/wiki/Soviet_invasion_of_Poland And im sure occupying and raping eastern Europe for half a century with commie tyranny is heavy lifting