Hussein Fancy is Associate Professor of History at the University of Michigan, Ann Arbor, USA. He is the author of the award-winning book, The Mercenary Mediterranean: Sovereignty, Religion, and Violence in the Medieval Crown of Aragon (2018, 2nd ed.)Alejandro García-Sanjuán is Associate Professor of Medieval History at the University of Huelva, Spain. Among other works, he authored La conquista islámica de la península ibérica y la tergiversación del pasado: del catastrofismo al negacionismo (2019, 2nd ed.)