[Fajri Matahati Muhammadin is an assistant professor at the Department of International Law, Faculty of Law, Universitas Gadjah Mada, Indonesia, and Director of Pusat Kajian Hukum Internasional Islam (Research Center for Islamic International Law).] Al-Mahdi: An Overlooked Question Before being brought to the ICC, Al-Mahdi made Islamic justifications for attacking shrines and a mosque (after actually previously being against it)….