By the time the DPRK gets finished wiping out the citizens, we won't need to worry about them. China already has a problem with the North Koreans sneaking across their border, same as we do with the Mexicans. Both of these countries are run by elitists who are getting fat off their poor. It's now just a matter of time before they both collapse completely. Then China will annex North Korea and we'll annex Mexico. Neither scenario sounds good.