Blood Year is an unsparingly honest, self-critical analysis of the collapse of western counterterrorism strategy and the subsequent rise of Islamic State. As a soldier, counterterrorism official, and Chief Strategist in the US State Department's Bureau of Counterterrorism, David Kilcullen was one of the original architects of US and allied counterterrorism policy. Kilcullen's frank assessment - that the strategy he helped design has failed, that it has not made us safer, and has contributed to new threats, including Islamic State - makes this short book mandatory reading for anyone interested in how terrorism is confronted. The most startling part of his analysis is that there may be worse dangers than ISIS incubating in various parts of the world.