Tremors

Apparently the North Korean's don't like to do things in halves. I would be surprised if the actually tested 3 more weapons. From what I understand, they don't have enough fissile material for more than 8 or so bombs. So testing half their possible inventory seems a bit much. This could indicate several things:

1) The North Korean's have access to a lot more fissile material than we knew about. This would be bad.

2) Some, or all, of the bombs being tested are not North Korean, but Iranian. This would be bad.

3) The North Korean's know they won't be attacked unless they attack first, so they set off bombs in order to get attention, and thus increase the blackmail they intend to extort. Not quite so bad. I actually think at this point that ignoring the NorKors might be the best option.