Thomas Donnelly, a defense and security policy analyst, is the director of the Center for Defense Studies. He is the coauthor with Frederick W. Kagan of Lessons for a Long War: How America Can Win on New Battlefields (2010). Among his recent books are Ground Truth: The Future of U.S. Land Power (2008), coauthored with Frederick W. Kagan; Of Men and Materiel: The Crisis in Military Resources (2007), coedited with Gary J. Schmitt; The Military We Need (2005); and Operation Iraqi Freedom: A Strategic Assessment (2004). From 1995 to 1999, he was policy group director and a professional staff member for the House Committee on Armed Services. Mr. Donnelly also served as a member of the U.S.-China Economic and Security Review Commission. He is a former editor of Armed Forces Journal, Army Times, and Defense News.

Frederick W. Kagan, author of the 2007 report Choosing Victory: A Plan for Success in Iraq, is one of the intellectual architects of the successful "surge" strategy in Iraq. He is the director of AEI's Critical Threats Project and a former professor of military history at the U.S. Military Academy at West Point. His books range from Lessons for a Long War (AEI Press, 2010), coauthored with Thomas Donnelly, to the End of the Old Order: Napoleon and Europe, 1801-1805 (Da Capo, 2006).

Danielle Pletka is the vice president for foreign and defense policy studies at AEI. Before joining AEI, she served for ten years as a senior professional staff member for the Near East and South Asia on the Senate Committee on Foreign Relations. She writes frequently on national security matters with a focus on domestic politics in the Middle East and South Asia regions, U.S. national security, terrorism and weapons proliferation.

Michael Rubin's major research area is the Middle East, with special focus on Iran, Iraq, Turkey, and Kurdish society. He also writes frequently on transformative diplomacy and governance issues. At AEI, Mr. Rubin chaired the "Dissent and Reform in the Arab World" conference series. He was the lead drafter of the Bipartisan Policy Center's 2008 report on Iran. In addition to his work at AEI, several times each month, Mr. Rubin travels to military bases across the United States and Europe to instruct senior U.S. Army and Marine officers deploying to Iraq and Afghanistan on issues relating to regional state history and politics, Shiism, the theological basis of extremism, and strategy.