Dumb Idea No. 3: Bombing Iran Now
Nobody can or should blame a tiny country living on the knife's edge with a dark past -- even one with an estimated 200-plus nuclear weapons -- for worrying deeply about a mullah-controlled Iran with the bomb.
What Israel does about the prospects of a nuclear Iran and when is a more complex matter. Striking Iran anytime soon -- even if the nuclear talks don't produce a deal quickly -- would be dumb. It's a different thing to assume grave risks if success is likely and you have broad support even if you fail.
An attack now will not prevent Iran from acquiring a nuclear capacity. It would be tantamount to mowing the grass; Iran would accelerate its nuclear program, most likely with greater international support. The world would be furious with the Israelis (see: higher oil prices, financial markets tanking, regional tensions), and nobody -- not even the United States -- would really understand why Israel struck when Iran didn't have enough fissile material to make a bomb and hadn't mastered the assembly of components, let alone tested a nuclear weapon. The Israelis' claim that they needed to strike because Iran's nuclear sites were now immune from attack would not be judged compelling by anyone.
It's much smarter -- though hardly easy -- for the Israelis to allow more time for sanctions to take their toll, see whether some deal on enrichment is possible, and if not, press the Americans to do what the president in March publicly articulated he would: not just contain Iran but prevent it from acquiring a weapon.
Knowing the Israelis, they've likely built extra time into their assessment regarding when and how Iran's nuclear sites will be immune from attack. If sanctions and diplomacy can't stop Iran from acquiring a weapon, a military option can't and shouldn't be ruled out. The dumb idea is exercising it now.