Or alternatively, you'd have Qatar, UAE, and worst of all by far, Saudi Arabia all with nuclear weapons a few years at most later. They'll all want the bomb if Iran has it, nothing surer.
20% uranium-235 is an ingredient for making the fuel for certain reactors (for example the ones typically used in nuclear subs). It does have a legitimate civilian use in the making of certain medical isotopes, but I do remember thinking that the amount they had was a bit much.
Yeah, other countries without nuclear weapons aspirations make 20% U235 as well. Pretty sure Brazil's annual production of it is a fair bit higher than Iran's entire accumulated stockpile was, too.