Ann Wright — The Logic in North Korean ‘Madness’

Of course it is rational behavior on the part of NK. Every sovereign nation has the right and responsibility of self-defense.

The real question is why countries that are on the US's "list" are arming  up and strengthening their nuclear deterrent. The US claims that there is no rational reason for it since the US is not threatening anyone. These countries see it differently in light of US behavior post-WWII.

Consortium News
The Logic in North Korean ‘Madness’

Col. (ret.) Ann Wright, US Army Reserve, former US diplomat