Luttwak's thesis is relatively straightforward. There is a government out there that may very soon acquire nuclear-weapons capabilities, and this country cannot be trusted to responsibly handle such a stockpile. The responsibility to protect the world from a rogue nation cannot be argued with, and we understandably have a duty to ensure the future of humanity.
However, there is one rogue nation that continues to hold the world ransom with its nuclear weapons supply. It is decimating non-compliant states left, right, and center. This country must be stopped dead in its tracks before anyone turns to the issue of North Korea.