Leader Greeting Defense Secretary Jim Mattis speaks with Turkish Prime Minister Binali Yıldırım during the London Somalia Conference at the Lancaster House in London on May 11, 2017. DoD photo by Air Force Staff Sgt. Jette Carr SHARE: Download: Full Size (1.67 MB) Credit: Jette Carr VIRIN: 170511-D-GY869-0038L.JPG Photo Gallery