180713-S-99ZZZ-001.jpg Defense Secretary James N. Mattis speaks at the U.S.-Adriatic Charter defense ministers meeting in Zagreb, Croatia, July 13, 2018. Mattis underscored U.S. support for a free, prosperous and secure Europe during the meeting of the regional bloc. State Department photo SHARE: Download: Full Size (0.18 MB) Credit: State Department VIRIN: 180713-S-99ZZZ-001.JPG Photo Gallery