Here is my prediction. There will be no war any time soon. But Israel will be getting more and more goodies from President Obama between now and the election just to ensure it, and probably afterwards as well.
Imagine a game of chicken, in which the public is involved. The public doesn't want this to end lethally, because it is dangerous for them as well. Now the question becomes who they try to persuade to swerve.
In failing to reach a negotiated settlement, the conflict with Tehran is inching closer toward a point of no return, where Israel might decide that the circumstances warrant a unilateral attack against Iran's nuclear facilities.