Book excerpt: In the world of terrorism, knowledge is a critical asset. Recent studies have revealed that, among international terrorists, there is a global sharing of ideas, tactics, strategies, and lessons learned. Teaching Terror examines this sharing of information in the terrorist world, shaping our understanding of, and response to, the global threat of terrorism. Chapters cover various aspects of individual and organizational learning, some using a general level of analysis and others presenting case studies of individual terrorist groups. These groups teach each other through a variety of means, including training camps and the Internet. Terrorist networks are also learning organizations, drawing on situational awareness, adapting their behavior, and, to give one example, improving not just their use of improvised explosive devices, but also rendering technology such as unmanned aerial vehicles and satellite phones ineffective. This book provides a wealth of insights on the transfer of knowledge in the world of terrorism, and offers policy implications for counterterrorism professionals, scholars, and policymakers.