I believe the USA's foreign policy is largely driven by the same thing that drives everything else there: money.
I'm not so naive as to believe that Iran don't care about cash at all, but when you look at the sunk costs they've "invested" in their proxies with very little ROI ($16billion in Syria, $300million and counting in Sudan etc. and from a country that is economically on its arse), I think it is reasonable to say that we are looking at very different motives: Namely a fundamentalist ideology rooted in an extreme interpretation of Islam that sees the presence of infidels on holy soil as a grievous insult and regional dominance of other strands of Islam as an intolerable threat. This isn't far-fetched either, Iranian media and academia is constantly spreading this message, even if it isn't obvious to English-speaking audiences.
I also look to the somewhat surprising reaction of the Sunni-majority Gulf States to the ongoing conflict in Gaza. They have been incredibly restrained, and to date not a single Arab country has fully broken off ties with Israel in protest. Here too, it is fair to wonder why this is. Again, the answer could be as crude as profitability - it is financially better for them to remain close to Israel and the West, but that paints a horrifically cold and heartless picture of States that until recently were considered the strongest supporters of the Palestinian cause.
Which is what leads me to my position: I want to see the Israel/Palestinian conflict resolved asap. I have outlined the steps I believe necessary to achieve this. Some of those steps are frankly way beyond me to work out though.
But I firmly believe that the day that conflict comes to an end, the wider conflict will only intensify, not least of all because a final agreement will bring a peace treaty between Saudi and Israel, and if the lunatics are still in charge in Iran, that will trigger a backlash that will dwarf whatever we are seeing now.
And I believe this is why the response from Sunni states has been so restrained. They know and understand far better than any of us that after decades of neglect and apathy, the Israel-Palestinian conflict morphed into a piece of a far bigger puzzle that directly concerns and threatens them all.