A man watches a television news report showing North Korean leader Kim Jong-Un (C-on screen) looking on the country's latest ground test for a rocket engine, at a railway station in Seoul on September 20, 2016. North Korea has successfully tested a new, high-powered rocket engine, state media said on September 20, a move experts say will bolster its already burgeoning weapons programme. / AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/Getty Images