The announcement by North Korea that they are now a nuclear-armed power is not much of a surprise to anyone. The further behavior of the regime is also predictable: in addition to the existing clientele list for the rogue state many new powers will be attracted to the nuclear knowledge-mart that is now officially open in East Asia. The bluster and sabre-rattling will now take a much darker turn, for the hyperbolic threats to turn the atheist version of the Great Satan into a lake of fire must now be regarded as accurate descriptions of threats.
Korea is the last battlefield of the Cold War. The power opposite us is not merely North Korea. The communist world worked off of an ideologically driven "spheres of influence" theory of international geopolitics. China, the largest remaining bastion of international communism, continues to operate under this premise. China views North Korea as an essential portion of it's sphere of influence, claimed under the banner of necessity when MacArthur's legions threatened to cross the Yalu in the winter of 1950. China has since maintained North Korea as a forward area. North Korea could not have concealed the existence of this nuclear program from the Chinese. Despite the binding ties of support that China uses to both prop up and control North Korea, not everything North Korea does is scripted by Beijing.
If I was sitting in Beijing, I would see this as a slap in the face, an act of insubordination against one's betters.
The response of North Korea's neighbors will be just as predictable. Countries sitting on the fence will need to react to make sure their security is guaranteed. I don't think I can say it better than Belmont Club in
All For One and One For All 2:
But North Koreas declaration, whether true or false will now force Japan, Australia, Taiwan, South Korea and perhaps Singapore to either obtain ironclad guarantees of inclusion under the American nuclear umbrella or develop nukes themselves. It would be intolerable for those countries to face a North Korean threat without a comeback. The could trigger a chain reaction of proliferation. For example, Australian nukes would make Indonesia think of having them.
The intriguing question is: why now? I cannot see any advantage to North Korea from this announcement. More importantly, I do not see any advantage from China at this time. The regime in Pyongyang may think that the United States is simultaneously too distracted by the simultaneous efforts in Iraq, Afghanistan, and for relief in Indonesia to react. I am not sure how to analyze that point yet.
I believe the United States, as it should, acknowledges that North Korea is as much in the Chinese sphere as South Korea is in the U.S. sphere. China needs to step up to the plate and take responsibility for this client state. They need to recognize the larger geostrategic ramifications of this action and shut down the nuclear program, or the regime, if necessary.
For further reading, I recommend the Belmont Club articles
All For One and One For All 2 and
I Lied.