Simeon Evstatiev is Professor of Near Eastern history and Islamic studies at Sofia University St. Kliment Ohdridski (Bulgaria). His books include Religion and Politics in the Arab World (2nd ed., 2012) and Salafism in the Middle East and the Boundaries of Faith (2018).Dale F. Eickelman is Research Professor of Anthropology at Dartmouth College (U.S.A.). His books include Russia’s Muslim Frontiers (edited, 1993), The Middle East and Central Asia (4th ed., 2002), and Muslim Politics (with James Piscatori, new edition, 2004).