A chapter is devoted to the activities of state sponsors of terrorism (Cuba, Iran, Sudan, and Syria), followed by a chapter that focuses on the global challenge of chemical, biological, radiological, or nuclear (CBRN) terrorism. Next, a chapter updates information on terrorist safe havens and cooperative efforts with the United States to eliminate these safe havens. Fifty-two terrorist groups operating throughout the world are profiled in terms of their geographic sphere of activity, their mission, and tactics. Another chapter submits "Country Reports on Terrorism 2010" in compliance with Title 22 of the United States Code, Section 2656f, which requires the U.S. State Department to provide Congress a full and complete annual report on terrorism for those countries and groups meeting the criteria of the Act. Included are statutory excerpts relating to the terms used in this report and a discussion of the interpretation and application of those terms in the report. The current 2011 report concludes with an Annex of Statistical Information on terrorist incidents as of March 12, 2012. This includes information on how the statistical information was developed by the National Counterterrorism Center (NCTC). Statistics are reported on the number of terrorist attacks worldwide for 2007, 2008, 2009, 2010, and 2011, according to the number of resulting deaths and injuries. A separate table provides this information for Iraq and Afghanistan. Other data tables address terrorism deaths and injuries of private U.S. citizens in 2011 by country, and terrorism kidnappings of private U. S. citizens by country.