“On February 26 [1998], in the name of Islamic Jihad, he [leader Ayman al-Zawahiri] signed a joint declaration with Bin Laden and representatives of different radical Islamist movements, announcing the creation of the World Islamic Front for Jihad against Jews and Crusaders and containing the famous fatwa that made the murder of Americans and their allies an individual duty for Muslims.”

 – Gilles Kepel and Jean-Pierre Milelli, eds., Al Qaeda In Its Own Words, Page 158