TOPSHOT - A South Korean K2 tank fires during a live fire demonstration for a media preview of the Defense Expo Korea 2018 at Seungjin Fire Training Field in Pocheon, 65 kms northeast of Seoul, on September 11, 2018. - The defence exhibition specialising in land forces equipment will run from September 12 to 16 with 250 companies from 30 countries involved. (Photo by Jung Yeon-je / AFP)