But Iran can't reach the US. I don't think there's even a nuke capable of launching from Iran without having the distance already partially covered by a submarine or something. If Israel instigates war with Iran, the US shouldn't be under any obligation to join them in said war. Trump has already sought other allies in the region, trying to form closer ties to Egypt (who was suspiciously excluded from the immigration ban list) or a liberalising Saudi Arabia under its new prince. Israel should become a relic of the past from antiquated foreign policy, a fuck-up of a decision who should fall into irrelevancy and stagnation like any other ethnically divided shithole mired in sectarian conflict on the planet. Don't be so eager to do the bidding of Israel because of Iranian posturing. War is "cool" on paper but the chances of America gaining in any substantial way from it is implausible. Let the Muzzies and Jews fight one another if they want, fuck 'em.
Plus it might benefit American oil exports if Iran can't put their oil into the market.