The man who marched behind Kim Jong-un is the NDC's Vice Chairman, Jang Song-thaek. Jang, 65 – a political survivor who has emerged from at least two purges and who is married to Kim Jong-il's sister, Kim Kyong-hui (herself a Politbureau member). Known as a hearty drinker and accordion player, Jang emerged in 2008 as a key adviser to Kim Jong-il after the latter was weakened by his stroke. He is believed to have been a mentor to Kim's first son, Kim Jong-nam (living in virtual exile in Macao), and now to Kim Jong-un.