The last country on the planet I'd want to have a nuclear arsenal is N.Korea, but that doesn't detract from the reality that the last thing you'd call the countries that DO have nukes paragons of virtue ... *whoa ... sentence structure brainfreeze! >_<*
Anyway, the simple reality is that it's an arms-race. As long as countries like the US rattle sabres and HAVE nuclear weapons, we can hardly blame every third world despot who has heard the phrase "regime change" for wanting a couple of big ... status symbols of their own. The US let that genie out of the bottle sixty-odd years ago. As much as we all want them to it won't go back in. Which is why "pre-emptive action" and "regime change" and that sort of unilateral BS is the most destabilising thing in the world right now. The only way to engage other countries in the world now is as equals, and that's something countries like the US and Russia and China and such have yet to learn. There's no more place in the world for cultural, economic and military strong-arming, because these days even if you can't build one, you can just buy a Russian or Pakistani strong-arm of your own if you really, really want one.
The West still thinks that the best way to change the world is by imposing that change, but the reality is that change happens through osmosis. Think about a city, where lots of different people live together. They get to interact with one another on a regular basis, see the other guy and his "forn idears" really aren't that bad, they exchange ideas and opinions and start kinda adopting stuff that works for them, respecting stuff that doesn't, and two or three generations down the line everybody speaks Mandarin English, like on Firefly.
Mina.
"Don't waste your whole life trying to get back what was taken away" - The Offspring from "Kristy are you doing okay"