The War on Terror is more than a political movement to identify and prosecute terrorists ... it has become a cornerstone of economic and military importance. This campaign has shaped policy in the Middle East, prompted uprisings of Islamic fundamentalists against the West, and redefined the ideology of warfare. This single-volume encyclopedia provides readers with more than 200 engaging entries on the myriad events, key individuals, and organizations that have played a major role in the War on Terror. The A-Z entries define the policies and doctrines; describe the armies, battlefields, and weapons employed; and profile the figures whose actions and decisions set the course of history. The expert contributors decode military jargon for non-specialist readers and explain the unconventional tactics used in the War on Terror, shedding light on the reason behind the attacks, the political maneuvering of the leaders involved, and the internal conflicts and external clashes that drove terrorists to settle all over the world. The book also includes detailed essays on the impact of the September 11 attacks on U.S. foreign policy, presidential powers, and public opinion.