Essentials of Terrorism: Concepts and Controversies

Captivating, concise, and current, Essentials of Terrorism: Concepts and Controversies introduces readers to the modern landscape of domestic and international terrorism. The Fifth Edition of Gus Martin’s renowned text covers key foundational topics and provides a framework for defining terrorism and exploring its history and causes, while also discussing terrorist environments, tactics, targets, and counterterrorism. 

This new edition includes information regarding intelligence, counterterrorism laws, and deprivation theory, as well as new and updated sections discussing mass violence in the United States, narco-terrorism, anti-state dissident terrorism, ISIS, and a new theoretical model for ending terrorist campaigns. The text also examines recent attacks and presents new data, case studies, and photos to show readers the state of terrorism across the globe today. 

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Clarence Augustus “Gus” Martin is Professor Emeritus in the Department of Criminal Justice Administration at California State University, Dominguez Hills, where he teaches courses on criminal law, terrorism and extremism, and the criminal justice system. He served as the founding Chair of the department and as the founding Director of the School of Public Service and Justice. He also served as Associate Vice President for Human Resources Management, Acting Associate Dean of the College of Business Administration and Public Policy, Associate Vice President for Faculty Affairs, and Chair of the Department of Public Administration. He began his academic career as a member of the faculty of the Graduate School of Public and International Affairs, University of Pittsburgh, where he was an Administration of Justice professor. His current research and professional interests are terrorism and extremism, homeland security, and the administration of justice.

Dr. Martin is author of several books on the subjects of terrorism and homeland security, including Understanding Terrorism: Challenges, Perspectives, and Issues (SAGE Publications, 2025); Terrorism and WMDs: Awareness and Response, Third Edition (with John Pichtel, CRC Press, 2025); Understanding Homeland Security (SAGE Publications, 2024); The Handbook of Homeland Security (with Scott Romaniuk and Martin Scott Catino; Routledge, 2023); Essentials of Terrorism: Concepts and Controversies (SAGE Publications, 2022); Terrorism: An International Perspective (with Fynnwin Prager; SAGE Publications, 2019); The SAGE Encyclopedia of Terrorism, Second Edition (SAGE Publications, 2011); Terrorism and Homeland Security (SAGE, 2011); and The New Era of Terrorism: Selected Readings (SAGE Publications, 2004). He is also author of Juvenile Justice: Process and Systems (SAGE Publications, 2005).

Prior to joining academia, Dr. Martin served as Managing Attorney for the Fair Housing Partnership of Greater Pittsburgh, where he was also director of a program created under a federal consent decree to desegregate public and assisted housing. He was also Special Counsel to the Attorney General of the U.S. Virgin Islands on the island of St. Thomas. As Special Counsel, he occupied a personal and confidential position in the central office of the Department of Justice; sat as hearing officer for disciplinary hearings and departmental grievances; served as chair of the Drug Policy Committee; served as liaison to the intergovernmental Law Enforcement Coordinating Committee as well as to the Narcotics Strike Force; and provided daily legal and policy advice to the Attorney General. Prior to serving as Special Counsel, he was a “floor” Legislative Assistant to Congressman Charles B. Rangel of New York. As Legislative Assistant, he researched, evaluated and drafted legislation in areas of foreign policy, foreign aid, human rights, housing, education, social services, and poverty; he also drafted House floor statements, Congressional Record inserts, press releases, and news articles; and he composed speeches, briefing materials, and legislative correspondence.

Dr. Martin received his A.B. degree from Harvard College, J.D. from Duquesne University Thomas R. Kline School of Law, and Ph.D. from the Graduate School of Public and International Affairs at the University of Pittsburgh.