During the same interview, however, Vance suggested a proposal to end the war in Ukraine worth discussing: that the fighting stop where both sides’ troops are currently on the battlefield and a fortified demilitarized zone set up to prevent Russia from invading again. Ukraine would be guaranteed its sovereignty in exchange for its territory occupied by Russia and its neutrality—that is, it would not be admitted to NATO. Finally, Vance argues that Germany would need to fund Ukraine’s reconstruction.
https://www.theamericanconservative.com/j-d-vances-point-of-departure-for-peace-in-ukraine/
Of course, nothing prevents хуйло from starting another war, e.g. by bombing or rocket attacks.