But they do...North Korea, Iran, Pakistan...
North Korea is "rational" when compared to the likes of al Qaida.
Iran doesn't have anything weaponized yet, because the WILL use them the minute they do. And I think that Israel will probably take out all of Iran's nuclear capabilities in the near future.
Pakistan has nukes, but I have a feeling that we have more control over them than even they realize. Plus Pakistan is very interested in the United States keeping a BILLION Indians and a BILLION PLUS Chinese from overwhelming them.