Coalition Meeting Defense Secretary James N. Mattis participates in a meeting of the coalition to defeat the Islamic State of Iraq and Syria at NATO headquarters in Brussels, June 8, 2018. DoD photo by Air Force Tech. Sgt. Vernon Young Jr. SHARE: Download: Full Size (4.03 MB) Credit: TSgt Vernon Young Jr. VIRIN: 180608-D-IO684-096Y.JPG Photo Gallery