The Handbook of Terrorist and Insurgent Groups: A Global Survey of Threats, Tactics, and Characteristics (Edited By Scott N. Romaniuk, Animesh Roul, Amparo Pamela Fabe, János Besenyő, CRC Press, 2024) is an ambitious and wide-ranging edited volume on contemporary terrorism and insurgency. It examines how violent non-state actors have evolved since the September 11, 2001, attacks and how their ideologies, organizational structures, financing methods, operational tactics, and territorial ambitions have changed across regions.