How does Ukraine start negotiating with a country that has invaded theirs?
For the sake of peace, yes, I think they should be willing to make concessions. That’s how negotiations work.
If you refuse to offer anything you aren’t really negotiating. You’re just issuing demands with no exchange.
If the alternative was that they would rape, kill, and kidnap my people for the next 20 years without end?
I’m not willing to fight this war to the last Ukrainian.
See you have an issue in that argument. Without support (as that is what I assume would be the threat here) Ukraine has very clearly stated that it would fight on. You seem to forget that the west just lost a war in Afghanistan, who had no real foreign support.
All that cutting support off would do would drag this conflict out and make it mostly partisan action.