Dr. Gregory D. Johnsen is a former Non-Resident Fellow at the Sana’a Center for Strategic Studies where he focused on al-Qaeda, the Islamic State and armed groups in Yemen. Prior to joining the Sana’a Center, Dr. Johnsen served on the Panel of Experts for the UN Security Council on Yemen from 2016 to 2018. He is the author of The Last Refuge: Yemen, al-Qaeda, and America’s War in Arabia, which has been translated into multiple languages.

Dr. Johnsen holds a Ph.D. from Princeton University and Master’s degrees from Princeton and the University of Arizona. His writing on Yemen – and the wider Gulf – has appeared in The New York Times, The Atlantic Monthly, and Foreign Policy, among other publications. His journalism has won multiple awards, including a Dirksen Award from the National Press Foundation and, in collaboration with Radiolab, a Peabody Award.