A man watches a television news about a suspected visit to China by North Korean leader Kim Jong Un, at a railway station in Seoul on March 27, 2018.
Japanese media reported on March 26 that a train possibly carrying a high-level official from North Korea has arrived in Beijing, sparking speculation that the country's leader, Kim Jong Un, may have been aboard. / AFP PHOTO / Jung Yeon-je        (Photo credit should read JUNG YEON-JE/AFP/Getty Images)