I'm not going to pretend I know anything about North Korea -- or for that matter South Korea. But my friend Christine Ahn does and she's got a point of view on current tensions that people may not have encountered. She sees North Korea's recent nuclear test as yet another episode in a cycle of challenges and feints of violence that all arise from one cause:
Like I said, I don't know much about the Koreas, but it certainly makes intuitive sense to me that maintaining a state of "war" that still festers over fifty years after the shooting stopped is no the way to find peaceful solutions.
A group of Korea-American activists maintain an FAQ on their Korean Peace Treaty campaign. I found their approach to understanding the Koreas broadening. The other two locations I can think of where peoples live in proximity with no peace treaty -- Israel/Palestine and India/Pakistan in Kashmir -- aren't doing so well. There might be something to the idea that what is needed is a peace treaty.