The logic should be "If you don't build a bomb, we'd have no reason or
intent to attack you, so you won't need to build a bomb in the first place."
Save everyone a lot of trouble.
Sorry Echo.
Logic and Ahmadenijad are incompatible. He does not function from a logical basis but rather a theological basis. As such logic is thrown out of the window in favor of the scribblings of some 4th Century superstitionist. (I know, it's not a word).
You can't negotiate with any man that bases his life around a belief system that preaches "death to all but the faithful", (it does say that if you chose to read it that way - and many seem to), and you can't trust any man who enjoys steadily escalating brinkmanship - which he does. He will teeter and fall at some point...