South Korea's Defense Minister Han Min-Koo (L) poses with US Pentagon chief Jim Mattis (C) and Japan's Defence Minister Tomomi Inada for a photograph during a trilateral meeting on the sidelines of the 16th Institute for Strategic Studies (IISS) Shangri-La Dialogue Summit in Singapore on June 3, 2017. 
The annual Shangri-La Dialogue is attended by defence ministers from around the region and runs from June 2 to 4. / AFP PHOTO / Roslan RAHMAN        (Photo credit should read ROSLAN RAHMAN/AFP/Getty Images)