North Korea reaction

In the wake of North Korea's announcement of a nuclear test, the world is scrambling to react with punitive responses.
It is refreshing to see, however, that a modicum of skepticism exists in questioning whether North Korea really did conduct a nuclear test or not.
This may be a fallout from the run up to the Iraq war, where the press and American society in general stood by with glazed vision to the lies of weapons of mass destruction in Iraq.
Regardless, we need to continue to heed the words of Sun Tzu, codified in the Art of War centuries ago. Know your enemy and know yourself, then you need not fear the result of 100 battles - you will win every time.
We need to know North Korea - know what they are up to, confirm their claims of nuclear testing, and gauge their military status. From what we know so far, I would say we need not be too worried at this point. North Korea's missile tests have been mostly duds. They may have bluffed with respect to claims of a nuclear test this week. It could be entirely possible that Kim Jong Il is behaving like a toddler having a tantrum on the world's stage, clamoring for respect and attention.
On the other hand, if North Korea is not bluffing with respect to its nuclear readiness, we need to know this and approach the situation differently.
If any key lessons need to be learned from America's bungling efforts in the post 9/11 world, it is that intelligence information is one of the key weapons in our armamentarium. Without knowing our enemies, any conflicts we face will be lost.