Its likely that the us position would be to allow russia to keep much of what they have taken in exchange for security guarantees for ukraine. europe and ukraine will not give up the land, russia will not agree to security guarantees.

the purpose of this meeting was to establish that russia is honest with their conditions. they have offered the same conditions since day 1 and are willing to stop the war if those are met. its ukraine that has no interest in stopping the war, this meeting demonstrates that as well.