How powerful is the North Korea?

Politically, North Korea is a strong power. Militarily, North Korea, a nuclear power, with a 9.7 Million Reserve, and 1.9 Million active personnel is among the top military powers in the world. However, Economically in the early 1980's its neighbor South Korea surpassed it economically and natural disasters, mismanagement, and the collapse of the Socialist Market in the 90's led to a economic collapse which makes it weak economically.