The Guardian says that Saudi Arabia is considering a nuclear strategy, either an alliance with a nuclear power, a plan to buy the bomb from Pakistan, or to somehow get Israel and Iran to give up their nuclear programs.
The Saudis provided a lot of money to Pakistan while Pakistan was developing their nuclear program. Saudi has also recently stationed F-15s in the northwest of the country, in striking range of Israel.
Selling a nuclear weapon for cash would also be very attractive for North Korea, in fact export is, in my opinion, the most likely reason that the North is developing nuclear weapons.
We must stop the proliferation of nuclear weapons to our enemies by any means necessary. We wasted a year dickering with diplomacy over Iraq that produced nothing. Time is not on our side.