Player Embed Code: <iframe width='500' height='300' scrolling='no' frameborder='0' style='border: none; overflow: hidden; width: 500px; height: 300px;' allowtransparency='true' src='https://www.dvidshub.net/video/embed/604134'></iframe> Download Embed Share Defense Secretary Speaks at the 2018 Shangri-La Dialogue Defense.gov June 1, 2018 | 01:08:26 Defense Secretary James N. Mattis discusses U.S. leadership and Indo-Pacific security challenges at the 2018 International Institute for Strategic Studies Shangri-La Dialogue in Singapore, June 2, 2018.