Hey, Brainiac, Iran is still only months away from getting a nuclear weapon. The fissionable material is not the tough part, it's generating the right energy level of neutrons to initiate a cascading chain reaction in a supercritical mass. They can outfox the IAEA on the fissionable material part, and they can buy the info on explosive compression of the fissionables (Not exactly impossible for even crazy Shi'iteheads to figure out, since US scientists managed to dope it out without anything but brains, tube-based computers that would look stupid next to your smart phone, and slide rules over 70 years ago). Making the thing that makes it go boom is the hard part, but they can keep researching the shit out of that without having to site it at a centrifuge installation, ore plant, or military base - just a well-equipped university high-energy physics lab. It's also the kind of work they can keep packaged to move off-site without a trace, given two weeks' notice.
We got nothing, Iran got billions and an open door to sell oil, easily enough to outfit several university high-energy physics labs without even a noticeable hiccup in the cash flow.