That's the name of the game, it has nothing to do with deterrence. Israel will lose her nuclear hegemony in the Middle East if another state get's nuclear weapons. I think it's a great idea, Iran gives a lot of nations in the ME a nuclear umbrella forcing Israel to stay in Israel. Israel has invaded 3 nations in the last few years, Iran has not. Seriously, why should 5 Million people hold 1 Billion hostage in the ME with their nuclear weapons. It's completely ridiculous.
U.S. confirms ISIS computer expert killed in air strike (Reuters)
from the article: U.S.: We are pursuing next steps on Iran nuclear issue