The UN and the EU aren't going to be the ones to do anything about this. Probably not even the US, despite Karl Rove's statements about an October surprise. At least, not as the leading role. No, it's going to be China. China is North Korea's one ally. Think about that. There are about 200 countries in the world, and only one of them has had North Koreas back in any way shape or form for years. And now China has had it with their shit. That quote Zeality posted is a summary of the end of current government in North Korea. Because of Kim Jong-Il's insane policies, most of North Korea, except his inner circle and the army, are starving. The country is proped up entirely by international aid.
Without China's support, North Korea is completely alone in the world. And despite all of it's posturing, it isn't as strong as it like the world to believe. I wouldn't be surprised if China soon said "Fuck it" and annexed North Korea. It would take about half an hour, maybe forty five minutes. That's probably the most peaceful scenario. The violent one being China, Russia, The US, South Korea, Japan, and Australia ganging up and turning North Korea in to the worlds largest parking lot. But there is no scenario from here on out where North Korea comes out on top.