Nukes are very expensive and dangerous for the owner. The main reason to join the nuclear club is to protect oneself from the intrusion of a superpower. So the aggressive politics of USA (and NATO) is the main reason of the nukes' spread over the world nowadays. BTW you can surely remove North Korea from the "roadmap", cause it is already in club. Actually, USA provides help to North Korea each year. So, either a typical NATO high-level strategic planner have a problem with strategic planning or he takes NATO aggressiveness as something uncontrolled and tries only to reduce the consequences (mainly unsuccessfully).
No?