Trump’s whole thing was to separate us from our longtime traditional allies (UK Canada Australia France Germany rest of Europe Japan and South Korea etc) pull out of NATO and UN, and most of his supporters liked it. So for him to act like he cares about this is weird, but it’s just a dig at Biden so it’s fine
Perhaps the UN but the rest of your comment is nonsense. Trump wanted NATO members to pay their fair share.
My take was Trump’s whole thing was to avoid sending our troops all over the world to fight, while ignoring our southern border.