A consortium of researchers dedicated to improving the understanding of the human causes and consequences of terrorism

Despite fewer attacks in Western world, global terrorism increasing

Al-Qaida associated groups are 2012’s most deadly terrorist groups

COLLEGE PARK, Md. – (Dec. 19, 2013) – Although terrorism touched 85 countries in 2012, just three - Pakistan, Iraq and Afghanistan - suffered more than half of 2012’s attacks (54%) and fatalities (58%), according to new data released today by the National Consortium for the Study of Terrorism and Responses to Terrorism (START) Global Terrorism Database (GTD), based at the University of Maryland. The next five most frequently targeted countries were India, Nigeria, Somalia, Yemen and Thailand.

“While terrorist attacks have in large part moved away from Western Europe and North America to Asia, the Middle East and Africa, worldwide terrorism is reaching new levels of destructiveness,” said Gary LaFree, START director and professor of criminology and criminal justice at the University of Maryland.

In addition to illustrating a continued shift in location of attacks, the new data -- with more than 8,400 terrorist attacks killing more than 15,400 people in 2012 -- also show an increase in attacks and fatalities over the past decade. The previous record for attacks was set in 2011 with more than 5,000 incidents; for fatalities, the previous high was 2007 with more than 12,500 deaths. A map showing concentration and intensity of 2012 attacks is available here.














It is critical to note that beginning with 2012 data collection, START made several important changes to the GTD collection methodology, improving the efficiency and comprehensiveness of the process. As a result of these improvements, a direct comparison between 2011 and 2012 likely overstates the increase in total attacks and fatalities worldwide during this time period. However, analysis of the data indicates that this increase began before the shift in data collection methodology, and important developments in key conflicts around the world suggest that considerable upward trends remain even when accounting for the possibility of methodological artifacts.

In the 1970s, most attacks occurred in Western Europe. In the 1980s, Latin America saw the most terrorist acts. Beginning with the 1990s, South Asia, North Africa and the Middle East have seen steadily rising numbers of attacks, a trend that has accelerated in recent years.

“The other striking development in recent years is the incredible growth in terrorist attacks linked to al-Qaida affiliates,” LaFree said.

Though al-Qaida central was not directly responsible for any attacks in 2012, the six deadliest terrorist groups in the world were all affiliated to some extent with the organization. These include the Taliban (more than 2,500 fatalities), Boko Haram (more than 1,200 fatalities), al-Qaida in the Arabian Peninsula (more than 960 fatalities), Tehrik-e Taliban Pakistan (more than 950 fatalities), al-Qaida in Iraq (more than 930 fatalities) and al-Shabaab (more than 700 fatalities).

Attacks in Yemen, Nigeria and Iraq were among the deadliest in 2012.

  • On Jan. 5, unidentified Sunni perpetrators in Dhi Qar, Al Anbar and Baghdad, Iraq bombed various Shiite civilian targets, including pilgrims and laborers, in six separate attacks. Nearly 120 people were killed across all six attacks, including at least two suicide bombers.
  • In Nigeria on Jan. 20, approximately 190 people were killed in bombings targeting government, police, media, schools, utilities and private citizens, primarily in Kano. Boko Haram claimed responsibility for the attacks, indicating that they were carried out in response to Nigerian authorities detaining and killing Boko Haram members.
  • On March 4, al-Qaida in the Arabian Peninsula attacked a series of military targets in Zinjibar, Yemen, killing a total of 195 soldiers and kidnapping 73. More than 40 perpetrators were also killed in these attacks, and the hostages were released the following month.

GTD data files and documentation are available for download from the START website for users who would like to conduct custom analysis of the data.

In addition to the methodological improvements made in the collection and coding process, the GTD team has added elements to improve the experience for those using the database. 2012 is the first year of data that includes geocodes for all attacks that occurred worldwide. Efforts to geocode the historical data back to 1970 are ongoing, and with the current update the geocoding process was completed for an additional 20 countries in North Africa and Southeast Asia. This information makes it possible for analysts to explore geospatial patterns of terrorist violence and more easily identify the sub-national concentrations of attacks.

Other new variables include target subtypes, which systematically classify targets into more specific categories. For example, while previous versions of the data allowed users to explore a subset of attacks against transportation targets, now analysts can easily identify attacks that target buses (42% of all transportation attacks), trains (33%), bridges and tunnels (9%), stations (7%), roads (4%), subways (2%), or taxis (1%).

“This update includes a number of improvements that we have been working on for several years, in response to common requests from users,” said Erin Miller, GTD program manager.

“We are always happy to get feedback on what types of information would make this a more useful resource and better serve the needs of researchers and practitioners.”

According to Miller, the most commonly requested feature is the ability to distinguish between international and domestic attacks. To address this need, the GTD team developed a set of indicators that classify attacks as international or domestic across several dimensions, including logistics (whether the perpetrator group crossed a border to carry out the attack) and ideology (whether the perpetrator group was attacking a target of a different nationality, regardless of where the attack took place). The domestic/international indicators and other new variables are currently included in the downloadable data files. START plans to incorporate them into the online user interface in a future update.

More information about the new variables can be found in the GTD Codebook.

With this data release, the GTD now contains information on more than 113,000 domestic and international terrorist attacks between 1970 and 2012 that resulted in more than 243,000 deaths and more than 324,000 injuries. These attacks are defined as the threatened or actual use of illegal force and violence by a non-state actor to attain a political, economic, religious or social goal through fear, coercion or intimidation.

The GTD is funded through START by the Department of Homeland Security Science and Technology Directorate’s Office of University Programs, the U.S. Department of State’s Bureau of Counterterrorism, and the Department of Homeland Security Science and Technology Directorate’s Resilient Systems Division.


The National Consortium for the Study of Terrorism and Responses to Terrorism (START) is supported in part by the Science and Technology Directorate of the U.S. Department of Homeland Security through a Center of Excellence program based at the University of Maryland. START uses state‐of‐the‐art theories, methods and data from the social and behavioral sciences to improve understanding of the origins, dynamics and social and psychological impacts of terrorism. For more information, contact START at infostart@start.umd.edu or visit www.start.umd.edu.