ATLANTIC COUNCIL Washington Post Columnist David Ignatius moderates a public discussion with Chairman of the Joint Chiefs of Staff Gen. Martin E. Dempsey during an Atlantic Council meeting in Washington, D.C, Dec. 9, 2011. The council promotes constructive U.S. leadership in international affairs based on the central role of the Atlantic community in meeting the challenges of the 21st century. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 331211-H-WCZ52-607.jpg Photo Gallery