North Korean leader Kim Jong Un shakes hands with China's President Xi Jinping during Xi's visit in Pyongyang, North Korea in this undated photo released on June 21, 2019 by North Korea's Korean Central News Agency (KCNA)

North Korean leader Kim Jong Un shakes hands with China’s President Xi Jinping during Xi’s visit in Pyongyang, North Korea in this undated photo released on June 21, 2019 by North Korea’s Korean Central News Agency (KCNA)