While only one of the terrorist attacks in 2011 was attributed to al-Qaida Central—the August kidnapping of Maryland native Warren Weinstein in Pakistan—11 of the top 20 most active groups are linked to al-Qaida.
The findings, released in the National Consortium for the Study of Terrorism and Responses to Terrorism (START) Global Terrorism Database (GTD) at the University of Maryland, is the most comprehensive, unclassified database of terrorist incidents.
It currently contains information on more than 104,000 domestic and international terrorist attacks between 1970 and 2011 that resulted in more than 225,000 deaths and more than 299,000 injuries.
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