Partner at Arnold & Porter, LLP. Former legal adviser for the U.S. Department of State and National Security Council. Currently directing a roundtable series on international and national security law.

Author of American Force: Dangers, Delusions, and Dilemmas in National Security and professor at Columbia University. Commissioner to the National Commission on Terrorism and former staff member of the Senate Intelligence Committee. Current work examines the U.S. national security agenda.

Award-winning author of Military Power: Explaining Victory and Defeat in Modern Battle. Former associate professor and Elihu Root chair of military studies at the U.S. Army War College Strategic Studies Institute. Current work examines U.S. defense policy and strategy.

Former deputy assistant to the president, deputy national security adviser for strategic planning, and presidential envoy to Iraq under George W. Bush. U.S. Ambassador to India from 2001 to 2003. Current work focuses on American foreign policy writ large as well as China, Russia, the Middle East, South Asia, and geoeconomics. Editor of Iran: The Nuclear Challenge and coauthor of Lee Kuan Yew: The Grand Master's Insights on China, the United States, and the World.

Award-winning author, historian, and military strategist. Author of The Savage Wars of Peace: Small Wars and the Rise of American Power, War Made New: Technology, Warfare, and the Course of History, 1500 to Today, and, most recently, the New York Times best-seller Invisible Armies: An Epic History of Guerrilla Warfare from Ancient Times to the Present.

Expert on counterterrorism and national security issues. Principal at Chertoff Group. Former deputy commissioner for counterterrorism with the New York City Police Department.

Author of two bestsellers (The Coming Plague: Newly Emerging Diseases in a World Out of Balance and Betrayal of Trust: The Collapse of Global Public Health). Recently published I Heard the Sirens Scream: How Americans Responded to the 9/11 and Anthrax Attacks. Presently writing a book examining the global impact of infectious disease.

Lieutenant General, USAF (Ret.). Former commander of Air Force Global Strike Command. Previously defense attaché to Moscow and director for nuclear policy and arms control on the National Security Council staff. Current work examines the nuclear arms control policies of the United States and the other nuclear weapons states.

Director of the CFR program on energy security and climate change and the CFR project on energy and national security. Currently writing books on the future of American energy and on China's natural resource quest. Author of studies and books on climate diplomacy, energy innovation, nuclear terrorism and proliferation, arms control, and science and technology in the Islamic world.

Former State Department policy planning staff member. Current work focuses on U.S. policy in South Asia, especially Pakistan and India.

Jeane Kirkpatrick Professor of the Practice of International Affairs at Harvard University's Kennedy School. Former Deputy National Security Advisor for Iraq and Afghanistan, former advisor to the Coalition Provisional Authority in Baghdad, former member of State Department policy planning staff handling Northern Ireland peace process, Iran, Syria, and relations with the Muslim world.

Award-winning journalist and national security writer. Former deputy editorial page editor for the New York Times and chief diplomatic correspondent for the Wall Street Journal. Directing a roundtable series focused on national security in an age of austerity.

Currently leading projects on cybersecurity and cyberconflict. Recent book Advantage looks at the technological competitive advantages of Asia and the United States. Previously the project director for a CFR-sponsored Independent Task Force on Chinese military modernization.

Political scientist with expertise in national security issues. Currently researching drone strikes and their impact on U.S. foreign policy. His book Between Threats and War: U.S. Discrete Military Operations in the Post-Cold War World was released in September 2010.

Author of No One's World: The West, the Rising Rest, and the Coming Global Turn (2012). Professor of international affairs at Georgetown University. Former director for European affairs at the National Security Council.

Director of the CFR program on energy security and climate change and the CFR project on energy and national security. Currently writing books on the future of American energy and on China's natural resource quest. Author of studies and books on climate diplomacy, energy innovation, nuclear terrorism and proliferation, arms control, and science and technology in the Islamic world.

Award-winning coauthor of America Unbound: The Bush Revolution in Foreign Policy and former director for global issues and multilateral affairs at the National Security Council. Author of the blog The Water's Edge.

Former State Department policy planning staff member. Current work focuses on U.S. policy in South Asia, especially Pakistan and India.

Award-winning journalist and national security writer. Former deputy editorial page editor for the New York Times and chief diplomatic correspondent for the Wall Street Journal. Directing a roundtable series focused on national security in an age of austerity.

Expert on emerging sources of regional instability and violent conflict. Currently focusing on U.S. preventive strategies to meet future challenges to international peace and security. Coauthor of the Council Special Reports Partners in Preventive Action: The United States and International Institutions and Enhancing U.S. Preventive Action.