INCHEON, SOUTH KOREA - JANUARY 12: Former U.N. Secretary General Ban Ki-moon arrives at Incheon International Airport on January 12, 2017 in Incheon, South Korea. Former United Nations Secretary General Ban Ki-moon, succeeded by former Portuguese Prime Minister Antonio Guterres on 1 January 2017, returned home amid the increased attention. The U.S. prosecutors charged Ban's brother and nephew with conspiracy to bribe a government official on January 10, 2017 while Ban is one of the possible contenders for the future president of South Korea. (Photo by Chung Sung-Jun/Getty Images)
