Answering Questions Defense Secretary Jim Mattis and John Chipman, director-general and chief executive of the IISS, conduct a question and answer session during the Shangri-La Dialogue in Singapore, June 3, 2017. DoD photo by Air Force Staff Sgt. Jette Carr SHARE: Download: Full Size (0.98 MB) Credit: Jette Carr VIRIN: 170603-D-GY869-192A.JPG Photo Gallery