China, North Korea meet over nuclear agenda

Chinese President Xi Jinping, left, waves next to North Korean leader Kim Jong-un as he arrives at the Sunan International Airport in Pyongyang, North Korea. (Photo: AP)

Chinese President Xi Jinping, left, and North Korean leader Kim Jong-un wave from an open top limousine as they travel along a street in Pyongyang, North Korea. (Photo: AP)

Visiting Chinese President Xi Jinping, second from left, and his wife Peng Liyuan, left, and North Korean leader Kim Jong-un, second from right, and his wife Ri Sol Ju, right, applaud during a mass gymnastic performance at the May Day Stadium in Pyongyang, North Korea. (Photo: AP)

North Korean leader Kim Jong-un, center right, his wife Ri Sol Ju, right, Chinese President Xi Jinping, center left, and his wife Peng Liyuan pose for a photo at Kumsusan guest house in Pyongyang, North Korea. (Photo: AP)

North Korean leader Kim Jong-un, right, shakes hands with Chinese President Xi Jinping at Kumsusan guest house in Pyongyang, North Korea. (Photo: AP)

Chinese President Xi Jinping, left, and North Korean leader Kim Jong-un walk together at the state guest house in Pyongyang, North Korea. (Photo: AP)

North Korean leader Kim Jong-un, center right, his wife Ri Sol Ju, right, Chinese President Xi Jinping, center left, and his wife Peng Liyuan offer silent prayers as Xi laid a wreath at a memorial in Pyongyang, North Korea. (Photo: AP)

North Korean leader Kim Jong-un, right, talks with Chinese President Xi Jinping at Kumsusan guest house in Pyongyang, North Korea. (Photo: AP)

North Korean leader Kim Jong-un, rear right, his wife Ri Sol Ju, bottom right, Chinese President Xi Jinping and his wife Peng Liyuan have lunch at Kumsusan guest house in Pyongyang, North Korea. (Photo: AP)

North Korean leader Kim Jong-un, center right, and Chinese President Xi Jinping, center left, visit a memorial to Chinese soldiers killed in the 1950-53 Korean War, in Pyongyang, North Korea. (Photo: AP)

North Korean leader Kim Jong-un, center left, and Chinese President Xi Jinping, center right, attend a send-off ceremony at Pyongyang International Airport in Pyongyang, North Korea. (Photo: AP)