Player Embed Code: Download Embed Share Defense Officials Testify About Military Posture in Europe Defense.gov April 10, 2024 | 02:40:56 Celeste Wallander, the assistant secretary of defense for International Security Affairs, and Army Gen. Christopher G. Cavoli, the commander of U.S. European Command and North Atlantic Treaty Organization Supreme Allied Commander Europe, testify before the House Armed Services Committee about the U.S. military posture and national security challenges in Europe.