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/698024'></iframe> Download Embed Share DOD Policy Leader Discusses Future Threats at Aspen Security Forum Defense.gov July 20, 2019 | 53:20 John Rood, undersecretary of defense for policy, speaks on planning and engaging future threats to the United States as part of the Aspen Security Forum in Aspen, Colo., July 20, 2019.