And America is using that to exert their influence on that region in the world. Sure sounds like a proxy. Just because Israel has more power in American politics compared to Ukraine doesn't mean they aren't a proxy.
I mean, the difference being that the US has a say in how one in conducted, and a very justified interest in it's outcome, while the other is in the Middle East.
Why they are running a proxy war that's out of control and doesn't help anything is a good question, and one that can only have stupid answers.