This is getting absurd. 5000 allowed? (Current state of negotiation per Fox News report.) The only significance in the number of centrifuges they are allowed is how old your children will be when they are killed. All Iran needs is one satellite launcher and one nuke, detonate it over the US and the EMP would kill our civilian technological infrastructure. One or two dozen minutes later Iran would be glass, but most of the people in the US would die in the following weeks and months from loss of infrastructure (food, medical, water, etc.). Actually, I suspect it would take more than one nuke. Just my engineering gut feeling. Military weapons systems and technological infrastructure are radiation hardened. Our military would still be running even after a nuke EMP.