Patterns of Global Terrorism http://www.state.gov/sffict/rls/pgtrpt/
The U.S. government remains one of the largest presences on the World Wide Web. There are many ways to access its Web sites, but SciTechResources.gov is one of the newest, most useful portals. Many of the sites listed will not be of interest to readers of this journal: Duckdata, for example, provides a detailed bibliographic database on the habits of American waterfowl. On the other hand, the site offers a reasonably swift way to find out what the U.S. government has on such subjects as global warming, biological warfare, and international water research, which is a very great deal indeed.
One of those oft-cited sources of statistics now conveniently on the Web, ""Patterns of Global Terrorism"" is archived on the State Department's site, which is extremely useful to a student of international affairs (see, for example, its collection of treaties). As is often the case with such reports, one may quibble with the definition of incidents and terrorist groups, but it provides a useful baseline for thinking about the problem overall."