SD attends counter-ISIS meeting Defense Secretary Jim Mattis and NATO Secretary General Jens Stoltenberg, left, participate in a meeting of defense leaders from nations participating in the coalition to counter the Islamic State of Iraq and Syria at NATO headquarters in Brussels, Feb. 16, 2017. DoD photo by Air Force Tech. Sgt. Brigitte N. Brantley SHARE IMAGE: Download Image: Full Size (1.3 MB) Tags: Jens Stoltenberg, isis, JIm Mattis, SecDef, NATO Photo By: Brigitte N. Brantley VIRIN: 170216-D-GO396-0615.JPG Photo Gallery