The only way this war ends is by Russia being so economically damaged by their own war effort that they have no choice but to give in, quite possibly after a military coup. But that will happen on Russia’s timetable, there is no point going to them with a bad proposal that they won’t agree to, when they want to call it quits they’ll deal with it on their own.

Until then the war continues. No one’s happy about that but it’s better than any of the alternatives.