Terrorism is one of the primary concerns of the modern world and is increasingly becoming a major factor in all international relations in the 21st century. This revised and updated second edition of a major reference work in the area contains definitions and descriptions of all aspects of terrorism and political violence, including:

* individual terrorists
* terrorist organisations
* terrorist incidents
* countries affected by terrorism
* types of terrorism
* measures against terrorism
* forms of political violence
* history of terrorism
* psychology of terrorism