It’d be cathartic, but Trump’s pettiness is boundless. I don’t see an upside to turning the US away from the table at this time, but I can imagine a few different ways a flustered trump would retaliate, ranging from a string of sloppy tweets to going mask-off and dropping all support for Ukraine and explicitly and directly supporting Russia instead. The US is not a stable player, and every day it’s a little bit less so. There could potentially be more to lose than their support, so all I’m saying is this needs to be dealt with tactfully. I know it’s torture but this might be one of those “let him come to the table and pretend he’s doing something to keep him dumb and happy” situations.