Player Embed Code: Download Embed Share Esper, Milley Testify About U.S. Policy in Syria, Part 1 Defense.gov Dec. 11, 2019 | 01:25:48 Defense Secretary Dr. Mark T. Esper and Army Gen. Mark A. Milley, chairman of the Joint Chiefs of Staff, testify before a House Armed Services Committee hearing on U.S. policy in Syria and the broader region, Dec. 11, 2019.