'Hunting in the Shadows' by Seth G. Jones

From the publisher: This comprehensive, landmark history chronicles our ongoing battle against al-Qa’ida, the greatest threat the West has faced in the modern era.

An internationally recognized authority on terrorism and counterinsurgency, Seth G. Jones presents a dramatic narrative of the on-the-ground police work; the elaborate, multiyear investigations led by the CIA, FBI, and Britain’s MI5; and the shifting and deadly alliances between terrorist groups that have characterized the conflict.