U.S. Army Gen. Martin E. Dempsey, right, chairman of the Joint Chiefs of Staff, and British Army Gen. Nicholas Houghton, chief of Britain’s defense forces, listen during the 170th NATO Chiefs of Defense meeting at NATO headquarters in Brussels, Jan. 22, 2014. U.S. Army Gen. Martin E. Dempsey, right, chairman of the Joint Chiefs of Staff, and British Army Gen. Nicholas Houghton, chief of Britain’s defense forces, listen during the 170th NATO Chiefs of Defense meeting at NATO headquarters in Brussels, Jan. 22, 2014. SHARE: Download: Full Size (2.77 MB) Tags: Photo Essays Credit: VIRIN: 051570-Q-JKV50-694.jpg Photo Gallery