I personaly think that north korea it self is not a threat. Their economy is horrible, their GDP is selling old chinese weapons to other 3rd world countries. I have a feeling that north koreas govt is in the pocket of the chinese commies, and I think that this whole thing with the missle test is china wanting to makesure that their ICBMs will work. China said that they will take back Taiwan and if america trys to stop them they will destroy atleast one american city.
Look at their weapons and military build up they've had even in just the past couple years.
It would be hard to win a war against china...over a billion people...compared to us being just shy of 300million. And their military has to fight or they dissapear.