Outgoing United Nations Secretary-General Ban Ki-moon (2nd R) and his wife Yoo Soon-taek unveil the portrait of Ban, at the UN headquarters in New York, Dec 14, 2016. A portrait of Ban was unveiled on Wednesday at the UN headquarters by Ban himself and his wife, Yoo Soon-taek. The portrait is hanging on a wall at a lobby of the UN Secretariat building, next to the one of Kofi Anna, Ban's predecessor. [Photo/Xinhua]