North Korean leader Kim Jong Un rides a horse as he visits battle sites in areas of Mt Paektu, Ryanggang, North Korea, in this undated picture released by North Korea's Central News Agency (KCNA) on December 4, 2019. North Korea says leader Kim Jong Un has taken a second ride on a white horse to a sacred mountain in less than two months. KCNA via REUTERS

North Korean leader Kim Jong Un rides a horse while visiting battle sites in areas of Mt Paektu, Ryanggang, North Korea, in this undated picture released by North Korea's Central News Agency (KCNA) on December 4, 2019. The Korean Central News Agency (KCNA) on Wednesday, December 4, 2019 released photos showing Mr Kim riding a white horse to snow-covered Mount Paektu along with his wife and other officials, also on white horses. KCNA via REUTERS

North Korean leader Kim Jong Un rides a horse as he visits battle sites in areas of Mt Paektu, Ryanggang, North Korea, in this undated picture released by North Korea's Central News Agency (KCNA) on December 4, 2019. The mountain is the highest peak on the Korean Peninsula and Mr Kim previously went there before making major decisions. KCNA via REUTERS

North Korean leader Kim Jong Un visits battle sites in areas of Mt Paektu, Ryanggang, North Korea, in this undated picture released by North Korea's Central News Agency (KCNA) on December 4, 2019. The latest trip comes as a year-end deadline set by Mr Kim for Washington to come up with new proposals to salvage nuclear diplomacy is approaching. KCNA via REUTERS

North Korean leader Kim Jong Un visits battle sites in areas of Mt Paektu, Ryanggang, North Korea, in this undated picture released by North Korea's Central News Agency (KCNA) on December 4, 2019. North Korea says leader Kim Jong Un has taken a second ride on a white horse to a sacred mountain in less than two months. KCNA via REUTERS

North Korean leader Kim Jong Un visits battle sites in areas of Mt Paektu, Ryanggang, North Korea, in this undated picture released by North Korea's Central News Agency (KCNA) on December 4, 2019. The Korean Central News Agency (KCNA) on Wednesday, December 4, 2019 released photos showing Mr Kim riding a white horse to snow-covered Mount Paektu along with his wife and other officials, also on white horses. KCNA via REUTERS