I have to say that if I were in the Iranians shoes I would develop Nukes as well. Look at it from this way. Iraq had no nuclear weapons, it kept saying that, it allowed inspectors in, but US, Britain, and Isreal kept saying it has it. Now the same tactic is been done to Iran, first they will be sanctioned for sometime (to weaken them as Iraq) and then they will be invaded, regardless of whether they have nukes or not, so if they have any brains at all they should develop nuclear weapons because it makes no difference, they will be hit.
UN experts: North Korea continues to evade UN sanctions (AP)
from the article: ANALYSIS / Why is Israel suddenly praising Iran sanctions?