The Age of Lone Wolf Terrorism (Columbia University Press, 2017), by Mark S. Hamm and Ramon Spaaij, identifies patterns among individuals that commit acts of terror outside of a group or network. Hamm and Spaaij follow these individuals, commonly called lone wolf terrorists, through multiple data points to inform a model of radicalization. The trends and changes in lone wolf terrorists, targets of violence, and radicalization pathways over time provides valuable insights for counterterrorism efforts. Finally, Hamm and Spaaij examine FBI sting operations that aim to prevent terrorist attacks.

Beth Windisch is a national security practitioner. You can tweet her @bethwindisch.