FILE - In this Feb. 3, 2019, file photo, U.S. Special Representative for North Korea Stephen Biegun arrives at Incheon International Airport in Incheon, South Korea. South Korean media says Biegun has returned Friday, Feb. 8, 2019, to South Korea after a three-day visit to Pyongyang.
FILE - In this Feb. 3, 2019, file photo, U.S. Special Representative for North Korea Stephen Biegun arrives at Incheon International Airport in Incheon, South Korea. South Korean media says Biegun has returned Friday, Feb. 8, 2019, to South Korea after a three-day visit to Pyongyang. Lee Jin-man, File AP Photo
FILE - In this Feb. 3, 2019, file photo, U.S. Special Representative for North Korea Stephen Biegun arrives at Incheon International Airport in Incheon, South Korea. South Korean media says Biegun has returned Friday, Feb. 8, 2019, to South Korea after a three-day visit to Pyongyang. Lee Jin-man, File AP Photo