Because it seems fairly obvious to me that if the current nuclear program is taken out the chances that they'll be able to redevelop it in the near to medium te

Because it seems fairly obvious to me that if the current nuclear program is taken out the chances that they'll be able to redevelop it in the near to medium term future are extremely low. How exactly will they be able to do so? They won't be able to protect the sites from further attacks, not to mention losing a significant chunk of the expertise in form of personal along with the materials required. It's not some Lego set, rebuilding such a project is insanely complex and time consuming, chances of success are very low (assuming Russia, North Korea, etc, don't decide to just hand some over) Plus, even if they did develop a new program by the time it's done anti missile tech will most likely reach a new phase.