it doesn’t have to. main reason for this war being this long is reluctance of western partners to deliver equipment necessary to keep initiative in present state of war. As a result - Ukrainian army get decimated while russians are getting better and everything awful they do: war crimes, defences, offense etc. Time is running out to help Ukraine and calls to “bust give up now” are self-fulfilling prophecy. I’m a pacifist at heart but in this case there is no way of stopping russian expansion (present and future) than to supply Ukraine with all necessary to win. Otherwise 1-2yr after “negotiations” we’ll have v2.0 where russia chomps off next piece of Ukraine (or other bordering country) while the rest of the world will keep repeating “what’s the point? we gave in last time, might as well save ourselves the trouble and give up now”. Solution by escalation is still possible as russia still has upper limit they are bumping against, but they keep on raising it so soon enough nothing will help, and that’s what russians hope for.