I don’t know that they want our help militarily, I think they would like us to make it economically wise for the Chicoms to stay out of it. That said, I guess it does come down to how long the Israeli’s think they have until Iran can deliver a nuke.
No country has Israel’s level of motivation in this matter.
I predict that if this comes to pass, the Chicoms will
acclimate themselves to the situation, because ultimately
the indivdual Chicom serviceman has no wish to die for
Iran to stop an IDF strike.
There will be intemperate language and diplomatic note exchanges w/exaggerated font sizes (maybe even italics!)
but no serious fallout.