In this Friday, March 17, 2017 photo, U.S. Secretary of State Rex Tillerson, right, is briefed by U.S. Gen. Vincent K. Brooks, commander of the United Nations Command, Combined Forces Command and United States Forces Korea as a North Korean soldier, rear right, takes a photograph through a window at the U.N. Command Military Armistice Commission meeting room at the border village of Panmunjom, which has separated the two Koreas since the Korean War, South Korea. (AP Photo/Lee Jin-man, Pool, File)