So North Korea set off a "nucular bomb.", big deal so did the U.S, but it was 20x larger and people died for real. Oh yeah we also set off hundreds of other tests during the cold war. What is the big idea getting all upset with North Korea. True they are kind of not our friends, but so was Russia, and no one got Nuked, except some cactuses and lizards in area 51.
The bottom line is that even though another, potentially hostile nation has developed a nuclear weapon no one is going to be nuked because if anyone does, the reprocutions from all other nations in retaliation would be far greater than the satisfaction of inflicting harm on, say the U.S. In other words "if you kick sand in my face, I'll
run you over with a bus!!". That is why the arms race with Russia never amounted to anything.
My belief is that this is a conflict easily solved by VERBAL diplomacy. War is not an option, and the U.S. of A. needs to get over the fact that they are not the only ones allowed to play with big boy toys. Each nation is an individual power with individual rights and the most the U.S. can do is tell North Korea that we don't like the idea that they have "nucular weapons of mass destruction." and "if you kick sand in my face, I'll run you over with a bus!!". True the beans have been spilled, the can kicked, and the status quo upset, but the four Horsemen of the apocalypse are still in the stalls. It's just a new development that we need to cope with and if it requires a more tactful administration than so be it.
My thoughts are that a government's job is to protect the people, and avoid war, not protect the people's way of life, and go to war over it. If Pyongyang has developed more advanced weapons we must take it as the natural advance of technological international progress, not the end of the U.S. world police force. after all, even France has nuclear arms and everyone knows that they are much more dangerous to our serine, patriotic, American way of life than any other nation, including North Korean has ever been.