In the ongoing conflict with ISIS, military observers and regional experts have noted that it is just as important to understand its motivating ideology as to win battles on the ground. This book traces the evolution of this ideology from its origins in the prison writings of the revolutionary jihadist Sayyid Qutb, through the thinking of Osama bin Laden and Ayman al-Zawahiri, who planned the 9/11 terrorist attack, to today's incendiary screeds that...