NATO Ministers From left, British Defense Secretary Gavin Williamson, Acting Defense Secretary Patrick M. Shanahan and North Macedonian Defense Minister Radmila Sekerinska sit for a meeting during a two-day NATO defense ministerial in Brussels, Feb. 13, 2019. SHARE: Download: Full Size (0.55 MB) Tags: Shanahan, NATO, Acting Defense Secretary Credit: NATO VIRIN: 190213-O-ZZ999-302.JPG Photo Gallery