"We ain't a sharp species. We kill each other over arguments about what happens when you die, then fail to see the ******* irony in that." - Justin Halpern
"He who does not think himself worth saving from poverty and ignorance by his own efforts, will hardly be thought worth the efforts of anybody else." -- Frederick Douglass, Self-Made Men (1872)
Second of all, having a handful of nuclear weapons isn't really that big a deal. It's having the technology and capacity to produce more if needed that's really the key. Y'know, give a man a fish he'll eat for a day - teach a man to fish and he'll eat for a lifetime and all that.
Besides, if it were so easy for Iran to simply purchase nuclear weapons as you say, why are they going to such great lengths and sabotaging their whole economy?