Passage: Eighteen months later, having been removed from the presidential detail, Banning works at Treasury headquarters. During a meeting between Asher and South Korean Prime Minister Lee Tae-Woo (Keong Sim) at the White House, a North Korean terrorist organization, led by Kang Yeonsak (Rick Yune), mounts an air and ground assault that results in the capture of the building. The group is aided by treasonous members of the prime minister's own detail, including Dave Forbes (Dylan McDermott), a former Secret Service agent. Asher and several top officials are held hostage in the White House bunker; South Korean Prime Minister Lee is executed on live video. Before his own death, detail agent Roma (Cole Hauser) alerts the Director of the Secret Service Lynne Jacobs (Angela Bassett) that "Olympus has fallen".

Question: Who lead North Korea terrorist organization
Kang Yeonsak (Rick Yune)