This book examines the doctrine of giving no concessions to terrorists, and uses empirical research to establish whether there is any link between negotiating with such groups and the spread of violence.

The logic of the no-concessions doctrine is based on the argument that other terrorist groups multiply when they realize that terrorism succeeds in achieving political goals. Proponents of the no-concessions doctrine have argued that there is a pattern in terrorist contagion which results from giving in to their demands. Statistical evidence for terrorist contagion is not convincing...