By now, everyone has heard about, if not actually read, the news reports that the National Intelligence Estimate says that Iran is apparently not pursuing nuclear weapons technology (rhetorical question #1: When the 2005 NIE said that Iran WAS seeking nuclear weapons, it was a "lie" according to many pundits and members of the MSM. Why is it now the gospel truth?). I'll leave aside for the moment my considerable doubts about this determination (rhetorical question #2: If NIE's early in this decaded said that Saddam Hussein's Iraq was pursuing nuclear weapons technology, and they were wrong, why are they right now?).
With or without nuclear weapons, Iran represents a clear and ever-present danger to American interests in the Gulf: http://www.opinionjournal.com/columnists/dhenninger/?id=110010950. It represents an existential threat to Israel. In fact, if you're Israel, do you REALLY want to trust your survival to the determinations of a bunch of eggheads in Washington, D.C.? I'd bet that the answer to that question is no, or it should be (no), anyway.