Ukraine has no leverage to broker any kind of peace. If the US totally cuts off military aid to Ukraine, they cannot hold against Russia. Thus the reality is revealed: this is a proxy war for the US. I know this hurts and is very unfair to Ukrainians, but it just is what it is. Sure, Ukraine can ignore the results of any negotiation, but it will continue the fight without US support-- a fight it has been slowly losing even with that support.

Israel votes with the US on things like this in exchange for US always voting to protect Israel from any censure.