In this 2019 June photo released by North Korea's official Korean Central News Agency, Chinese President Xi Jinping, second from left, North Korean leader Kim Jong-un, third from left, and their respective wives ― Peng Liyuan, left, and Ri Sol-ju, fourth from left, ― pay homage at the Friendship Tower, a symbol of their countries' alliance, in Pyongyang. Yonhap |