Could the Soviets have realistically liberated all of Germany (or at least the German territories east of the river Rhine) during the closing days of WW2? And if so, could the USSR have occupied all of Germany in the aftermath of the war, similiar to how the US singlehandedly occupied all of Japan? Would the Western Allies officially recognize it, or would the Soviets have to present them with a fait accompli? Would tensions be higher during the early Cold War years? Which PODs could realistically lead to such an outcome?