London Remarks Defense Secretary Dr. Mark T. Esper speaks at the Royal United Services Institute in London, Sept. 6, 2019. SHARE IMAGE: Download Image: Small (51.2 KB)| Medium (102.4 KB)| Full Size (0.45 MB) Tags: esper Photo By: Lisa Ferdinando, DOD VIRIN: 190906-D-BN624-0856Y.JPG Photo Gallery