The nature of terrorism -- Theories of aggression and terrorism -- A brief history of terrorism -- Two trajectories of humankind : globalization or clash? -- Religion, the state and terrorism -- Nonreligious extremism and terrorism -- Technology and terrorism -- Terrorism throughout the world -- Responses to terrorism -- Fear of terrorism -- Preventing terrorism : short-term approaches -- Preventing terrorism : long-term strategies -- Balancing security and rights to liberty and privacy -- Toward a safer and saner 21st century