South Korea’s national security director Chung Eui-yong, center, National Intelligence Service Chief Suh Hoon, second left, and others in the delegation pose before boarding an aircraft as they leave for Pyongyang at a military airport south of Seoul Monday.

South Korea’s national security director Chung Eui-yong, center, National Intelligence Service Chief Suh Hoon, second left, and others in the delegation pose before boarding an aircraft as they leave for Pyongyang at a military airport south of Seoul Monday.