Israel has a few big friends. Hey, here's a thought, maybe they think that's the best way to go about striking Iran. The US knows it can't sell its own public on another war but hell, why not have Israel do it for us. Each day this seems more and more the case, imo. They just want it to come off like it wasn't the idea of the US.
While I agree that Israel will "settle down" when America tugs the leash, in this case the US doesn't really want it to. It's important to consider also that many other nations are against a nuclear Iran. I for one am, as is my nation. Germany, France, Australia, New Zealand, Britain.
The shitty part is that Team Iran is pretty good too, given they share the bench with Russia and China.

The funny part of all of this is the contrast we see in Obama. I remember him saying that he would negotiate diplomatically with Iran and other enemies of the US. But just the other day, now Israel's security is of utmost importance..and "non-negotiable". I love that it shows he's just as much a liar as any other politician. Finally he demonstrates that he is not so original or amazing as everyone thinks; though it will be historical if and when he is elected, what will really come of it?
He is starting to grow on me though, only because he will ease tensions around the world, and help America be the great country it used to be - respected world wide. But he won't fix the US much...and people need to realize that.
Whats with all the people who want Jimmy Carter back, by the way. He got you into this damn mess!!