Al-Qaeda's war on America did not start on September 11, 2001. Just ask the Diplomatic Security Service. In Relentless Pursuit, Samuel M. Katz reviews the escalating series of terrorist attacks on the U.S. during the last decade and more, culminating with the horrific crimes in New York and Washington. In the process, he tells the gripping story of the Diplomatic Security Service. Katz's detailed, personal, on the ground anecdotes bring home the contexts and linkages, of the War on Terrorism that has been fought by the DSS since the 1980s.