So...
How many of his children and how much of his personal wealth is he willing to sacrifice so that Ukraine doesn’t stand alone?
I doubt there is anything in the Ukraine worth a single American life or a single taxpayer dollar.
Maybe if we had a more competent political and military leadership we might be able to finesse it. But the current leadership is so bad that we should avoid any confrontations.
USA will do nothing because no one is going to dare to put American boys in trenches in the middle of winter on the Ukrainian/Russian front. Putin will take advantage of it. Ultimately, I don’t think he’ll do that much other than to annex Russian speaking provinces in Ukraine. The government in Kiev will remain intact, the country will just become smaller.