Let’s not overlook that possessing nukes give a theocracy that thinks well of suicide bombs the means to build a doomsday device. “Attack us and everyone dies” would put Iran in a pretty strong strategic position without any need for a delivery system at all.
I was thinking that, given that area's attitude, all they have to say is "Go ahead and nuke us 'till we glow. We are willing to die for our cause. But, we will get one in on you first. We are ready to lose all of Iran. Are you willing to lose ONE American city?"