September 12, 2018; Ban Ki-moon, former secretary-general of the United Nations, center, speaks with Michel Hockx, director of the Liu Institute for Asia and Asian Studies, left. Also pictured are Madam Soon-taek Yoo, Catherine Wilson, senior counselor and protocol officer in Notre Dame International and Ambassador Kim Sook, former permanent representative of South Korea to the U.N. (Photo by Matt Cashore/University of Notre Dame)