I'm not an expert. Probably anti Western sentiment, anti any former allies of the deposed Shah, and pro Palestinian sentiment.

But in reality this doesn't matter, because you're now moving the goalposts: I didn't argue that Iran wasn't hostile to Israel.

I claimed that Iran's nuclear program was already destroyed for 10+ years (mission success, as claimed last year with total certainty by Trump), and that Iran didn't pose a threat to the US.

Now, if the US wants to fight Israel's wars, that's cool and dandy, but the majority of Americans don't support this. Remember "America First"?