Honestly Im not too worried about it, because I know as soon as Isreal even thinks they have nukes, they are going do what needs to be done to destroy them (the nukes). Isreal takes Iran's antisemite rhetoric very seriously. I was just reading the other day about when france sold Iraq a nuclear reactor in the 80s and Isreal blew it up within a couple weeks.
http://en.wikipedia.org/wiki/Osirak