The sources said that Iran completed a research programme to create weaponised uranium in the summer of 2003 and that it could feasibly make a bomb within a year of an order from its Supreme Leader.
Considering the fact that Iran sent scientists to North Korea a few months ago, and shortly thereafter a successful launch was made, I can believe that Iran could have a nuclear warhead within twelve months. However, some part of me still thinks that Iran is well aware of the fact that Israel would decimate the country if Iran attacked Israel. Also, if I recall correctly, Iran depends greatly on its economic ties with Great Britain. It would be foolish to risk that. And we all know what would happen if Iran would attack us.