AT some point the US jumps in and relieves Israel's burden.
Ideally yes, but the question is how? Throwing in with Israel would bring a world war. That may be where this is heading anyway, but it is something to think about.
That is part of the dilimma, we get involved, then it goes from regional to international to............the other big boys with nukes aren't going to sit on sidelines and watch.
It is scary when the planet has to rely on Iran to act like an adult.