AdvertisementWhy Analysts Aren't Laughing At These Silly North Korean PhotosMarch 21, 2016Geoff BrumfielfacebookEmailAn undated picture provided by the official Korean Central News Agency earlier this month shows North Korean leader Kim Jong Un talking with scientists and technicians. North Korea's nuclear warhead was jokingly dubbed "the disco ball," but experts say the spherical device, while likely a model, is probably based on a real nuclear weapons design. (EPA via Corbis)