Nuclear deterrence

A good analysis addressing the logical merits of the argument that Iran armed with nuclear weapons vis-a-vis Israel will make the Middle East or the World a safer place:
"But I was nervously aware that I was urging good sense about a strategic situation that was senseless, because it was premised upon the credibility of a threat of holocaust. I was careful to note my discomfort in my book: deterrence, I said, may be supported but not celebrated, because it is another term for an unprecedentedly lethal danger, which it elects to manage rather than to abolish. I was uneasy with the commonplace notion that deterrence between the United States and the Soviet Union “worked,” because this was impossible to verify.

[...]

I CANNOT SAY with sufficient confidence that an Israeli strike against Iran’s nuclear facilities would be rational or right. There is too much information that I do not possess. I worry about the costs. I do not fear that the region would go to hell, because the Arab states would rejoice in such an action. (In this matter the leader of the Sunni bloc is the Jewish state.) But I do not know that Iran in its current political configuration will be deterred, and neither does anybody else."