North Korea promotes leader's son

North Korean Worker's party delegates arrive at Pyongyang station for the party's first assembly in three decades Photograph: KNS via Getty Images A choir performs in front of a placard celebrating the Worker's party assembly in Pyongyang Photograph: Kyodo/Reuters North Koreans dance in Pyongyang to celebrate the promotion of Kim Jong-un to a four-star general in apparent preparation for another dynastic succession Photograph: KNS/AFP/Getty Images Young North Koreans dance in Pyongyang Photograph: KNS/AFP/Getty Images Kim Jong-il, centre, sits in front of a statue of his father, Kim Il-sung at the Workers' party conference Photograph: KNS/AFP/Getty Images North Korea's Workers party delegates applaud during the conference Photograph: KNS/AFP/Getty Images Kim Jong-il's sister Kim Kyong-hui (second left) was elected as a member of the party political bureau Photograph: KNS/AFP/Getty Images A North Korean flag flies atop a tower in the border village of Gijungdong Photograph: Lee Jin-man/AP A North Korean soldier briefs officials visiting the village of Panmunjom in the demilitarised zone separating the two Koreas Photograph: Lee Jae-won/Reuters North Korean soldiers stand guard on the banks of the Yalu river near the North Korean town of Sinuiju Photograph: Jacky Chen/Reuters A banner reading 'Hurrah, General Kim Jong-il, the Son of the 21st Century's Sun!' hangs near a gate in the border town of Sinuiju Photograph: AP