North Korean leader Kim Jong Un (R) and South Korean President Moon Jae-in (L) react as they watch the large-scale gymnastic and artistic performance at the May Day Stadium in Pyongyang on September 19, 2018, after their summit. North Korea’s Kim Jong Un agreed to make a historic visit to Seoul soon and close a missile testing site in front of international inspectors at a summit with the South’s President Moon Jae-in in Pyongyang on September 19.