Beginning with an examination of medieval Islamic fundamentalist movements such as Kharjism, Ibadism, Hanbalism, and Wahhabism, Sayed Khatab looks at the similarities and differences between them and present organizations such as al-Qa'ida. It may be surprising that many of the radical narratives embraced by modern groups have not emerged recently. Identifying these roots can lead to a better understanding of al-Qa'ida's theological and intellectual...