They can't veto stuff anymore.

The point of the UN is to negotiate your differences rather than decide them with MAD or nuclear weapons.

It's no guarantee but cutting one more diplomatic link surely won't help

Anyone really believes they'll just continue to shoot each-other until someone packs up and leave ? This conflict will end like most conflicts, around a big wooden table with a fat stack of paper and a fancy ink pen. Either that or we escalate until we all lose