Security Council Meeting President Donald J. Trump speaks to Defense Secretary Jim Mattis and members of the National Security Council during a meeting at the Pentagon, July 20, 2017. DoD photo by Army Sgt. Amber I. Smith SHARE: Download: Full Size (2.26 MB) Tags: Chairman, SecDef, president, Paul Selva, Donald J. Trump, JIM MATTIS, Joe Dunford, Vice Chairman Credit: Amber I. Smith VIRIN: 170720-D-SV709-006B.JPG Photo Gallery