Watching the people who sent JD Vance to Iraq be so angry about him is a radicalizing experience. Vance has every right to distrust the Republican Party that put so many of his compatriots in the ground over nothing.
Iraq isn't anything remotely like what's going on in Ukraine where Americans are NOT fighting but a democratic nation is fighting to preserve their freedom from an imperialist Russia that talks regularly about taking more and more of Europe. NATO keeps them away.