Bilateral Meeting Defense Secretary Jim Mattis, right, speaks with Jens Stoltenberg, secretary general of the North Atlantic Treaty Organization during a bilateral meeting at the Pentagon, March 21, 2017. DoD photo by Army Sgt. Amber I. Smith SHARE IMAGE: Download Image: Full Size (1.49 MB) Photo By: Amber I. Smith VIRIN: 170321-D-SV709-074A.JPG Photo Gallery