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/874868'></iframe> Download Embed Share Defense Leaders Speak at Hearing Defense.gov Feb. 28, 2023 | 01:58:37 Assistant Secretary of Defense for International Security Affairs, Dr. Celeste Wallander and Joint Staff Director for Operations Army Lt. Gen. Douglas A. Sims II address the House Appropriations Subcommittee on Defense on Ukraine during an oversight hearing.