With an emphasis on current theories and today's political and social environment, Terrorism and Homeland Security concisely and clearly explains the multifaceted subject of terrorism and its impact on homeland security in the United States today. This versatile text grounds the discussion within a historical, legal, administrative, and intellectual framework. The book focuses on providing readers with an understanding of the central challenges, perspectives, and issues in the field through four Parts: a conceptual review of terrorism and its causes; terrorist environments, such as religious or international terrorism; the terrorist trade, including the role of the mass media; and a fourth section that discusses domestic terrorism in the United States and investigates homeland security from both theoretical and organizational perspectives.