No 3 alternatives. Leave Ukraine for the Euros. They want the war. Let them have the war without us in it or paying for any of it. Our contribution could be some blankets and pillows.
Ok 3 alternatives ( or even more ).
Do the outcomes of each leave the US in a place we want to be?
Would leaving it for the Europeans to make a hash mess of it only still require the US to take care of it, and from an even worse position?
Looking at what’s likely to happen, since the ones actually deciding aren’t asking me.