Book excerpt: Christopher Hewitt's comprehensive book surveys the characteristics and causes of terrorism and governmental responses to it. He also examines the organizational structure of terrorist networks, how they are financed and their ideological agendas. Groups covered include: Islamic fundamentalists, white and black racists, black nationalists, revolutionary communists, neo-Nazis, militant Jewish groups, anti-abortionists and émigré groups. This book is essential reading for students of American politics and terrorism. It also provides a highly readable account for interested readers wishing to know more about a topic which has recently become tragically relevant to world affairs.