There is another part to the question: what will Obama do to hinder and prevent a response by Netanyahu to this imminent existential threat? Obama does not want any “disruption” to his plan to elevate Iran to world power status. He is hell bent on allowing it to become a regional power. That much is perfectly clear.
They'll take out Iran's underground nuclear sites simultaneously via ‘Valkyrie’ type events.
Iranian patriots or double agents will smuggle suitcase nukes into these hardened underground sites and detonate.