Russians started this war with misconceptions,i.e. that the non-Nazi hohos would welcome them as liberators, that they needed to avoid harm to civilian and govt infrastructure, that some sort of a deal would be made and the war would be over in a couple of months. Events since mid summer have totally disabused Russians of any/all of that.
The war will now end with, as Harry Truman once put it, a "Rain of Ruin"from the sky, moat likely in about two or three weeks