I don't know nearly enough about Iran as I should, so I all I will do is put down a marker, so to speak, that I don't think it's right simply to say that Iran was aiming to 'go nuclear' -- in the sense of acquiring nuclear weapons, nor do I think that it's correct to call them the "greatest terrorist supporting nation". The Muslim who stabs you to death, blows you up with a bomb, shoots you, runs you down with a car, is almost always a Sunni. If you happen to be in Afghanistan, he will be given sanctuary and support by the Pakistani government. If not, he probably got his theological training by a Salafist, nurtured by the vile Saudi theocracy. My own view -- admittedly based on not much knowledge -- is that the Iranians as a people are split between those who want to join the modern world -- young, urban, educated -- and those who are committed to their particular odious brand of theocracy, many of whom have a material stake in the status quo via corruption. The way to prevent Iran from gaining nuclear weapons is to aid the former to grow in numbers, and also in political influence. However, I don't know enough to argue this in depth, and in any case it would be a topic for another thread, hopefully with some Iranians taking part.