I’d think you’d be naive to think Ukraine would not become a vassal state to the US if Ukraine can somehow manage to win this war.

Because as far as I know US made huge loans to the Ukraine. Billions and billions of dollars. If Ukraine could manage to win the war, US will want payback for the loans. And I think payback will be in the form of resources. Perhaps US based multinationals like Monsanto taking over farmland or other companies exploiting resources. As I understand Ukraine is a very resource rich country and US pretty much only bothers to fight in countries with plenty resources.

At this point US is still exporting oil from Syria. And I should note, the Syrian government doesn’t approve of US invasion in Syria, much like the Ukraine government doesn’t approve the Russian invasion in Ukraine.