“Over 10,000 terrorist attacks occurred in 2011, affecting nearly 45,000 victims in 70 countries and resulting in over 12,500 deaths.  The total number of worldwide attacks in 2011, however, dropped by almost 12 percent from 2010 and nearly 29 percent from 2007.  Although the 2011 numbers represent five-year lows, they also underscore the human toll and geographic reach of terrorism. The Near East and South Asia continued to experience the most attacks, incurring just over 75 percent of the 2011 total.  In addition, Africa and the Western Hemisphere experienced five-year highs in the number of attacks, exhibiting the constant evolution of the terrorist threat.”

 

FBI Report on Terrorism (2011)