Why crushed? The end of EVERY was has been “seat and talk” except for total wars. Are you suggesting this one has to be a total war (a.k.a. total annihilation)?
What Zelenki AND Putin have to do is talk. Either that or fight until all Ukrainians or Russians are dead.
Even if they disagree 100%, the only solution is talking. The other “solution” is total war.
And if they talk MAYBE they can arrange a deal to cease fire. Not peace. Not winning the war. Just cease fire and talk.