The American People, and no POTUS in history would do such a thing, FR existential warriors not withstanding.
Did we do anything when they invaded Hungary and Czechoslovakia?
Beware those who are for American interests are called something like Putin lovers. Presidents have been in war despite of the interests of the American people. I think it is why we have a volunteer army and no draft. The executive can use the volunteer army as his private war instrument. Note how a WWII formal declaration of war by Congress is avoided. The country is not united unless there is such a declaration by Congress. Note the fate of our wars since WW II. Anyway, Presidents get into war even if the citizens oppose. And citizens oppose our war in Ukraine, Formosa, Africa or anywhere else in the NE or ME.