Having a nuclear weapon puts Iran on the front row at any meetings of world powers, and that is their goal.
The NEW WORLD ORDER is planning to consolidate all assets, then divvy up the take. One must be on the front row to get their 'say'. Having that Ace card up your sleeve (nuclear weapons) is what keeps the other world leaders (gangsters) from shooting you in the head and taking your stuff.
You're presuming that the Muslim leadership of Iran is sane.
They're not. They are Islamic fanatics and they don't give a damn about the power games of the West. They wish to destroy the West and Israel and bring on some sort of apocalypse that will lead to Muslim rule of the world. They constantly say this. I believe them.