Award-winning author of Inside the Cuban Revolution: Fidel Castro and the Urban Underground, the critically acclaimed Friendly Fire: Losing Friends and Making Enemies in the Anti-American Century, and Cuba: What Everyone Needs to Know. Currently conducting research on the regional and global dimensions of Brazil's rise.

Author of The Guardians of the Revolution: Iran's Approach to the World (Oxford University Press, May 2009). Served as senior adviser to the special adviser for the Gulf and Southwest Asia at the U.S. Department of State.

Former deputy editor of Newsweek International and director at EurasiaGroup.

Senior Coast Guard officer and helicopter pilot; most recently served as Chief of Staff, Eighth Coast Guard District with area of responsibility encompassing Gulf of Mexico and Mississippi River system. Extensive operational background in management of search and rescue, maritime law enforcement and security, maritime safety and environmental response missions.

PhD candidate in political science at Harvard University. Current research focuses on institutional responses to nuclear threats, including arms control agreements and the nonproliferation regime.

Former advisor to U.S. Secretary of State Hillary Rodham Clinton on global women's issues. Currently an adjunct professor of women's human rights at Georgetown University. Research focuses on the relationship between women's advancement and prosperity, stability, and security.

Former State Department and Defense Department senior official and National Security Council staff member. Professor of international law and national security law at Columbia Law School. Fellow in CFR's Cyberconflict and Cybersecurity Initiative.

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.