The FBI defines domestic terrorism as terrorism involving groups based in and operating entirely within the U.S. and its territories. According to the Global Terrorism Database, there have been 2,608 total attacks and 226 fatal attacks in the U.S. between 1970 and 2011. This thought-provoking edition focuses on issues related to domestic terrorism. It provides details on how domestic terrorism is different than other types of terrorism, the tactics that specific domestic terrorist groups use, and what can be done to prevent future attacks.