Slim Kim Jong-un: North Korean leader believed healthy despite weight loss

South Korean spies used advanced techniques to analyse why Kim Jong-un appears to have lost 20 kg

North Korean leader Kim Jong-un has recently lost about 20 kilograms (44 pounds) but remains healthy and is trying to increase public loyalty to him in the face of worsening economic problems, South Korea's spy agency has told lawmakers.

The National Intelligence Service gave the assessment during a closed-door parliamentary briefing on Thursday, it used artificial intelligence techniques, an analysis of super-resolution video of Kim and other methods to investigate Kim's condition, said two lawmakers who attended the session.