Bilateral Meeting Defense Secretary Dr. Mark T. Esper hosts a bilateral meeting with United Kingdom Defense Secretary Ben Wallace at the Pentagon, March 5, 2020. SHARE IMAGE: Download Image: Full Size (0.71 MB) Tags: Milley, Defense Secretary , Chairman, Partnerships, Esper Photo By: Marvin Lynchard, DOD VIRIN: 200305-D-FW736-1022C.JPG Photo Gallery