A Brief Note on Iran and Nukes
It took the United States four years to get nuclear weapons in an era when all the research had to be done for the first time.
Iran has been run by loons for a quarter century. They were fighting a war with a megalomaniac with nuclear ambitions for almost a decade. If they don't have nukes by now, they must be really lame.
On the other hand, they might have had nukes since 1988 (the war with Iraq came to a sudden end then) but the nukes might be controlled by an anti-mullah faction.