An independent, privately funded research and education institute.

We TeachEducate cadets and counterterrorism practitioners across all levels of government to confront the dynamic threat environment We ResearchConduct rigorous and policy relevant research that informs and shapes counterterrorism policy and contributes to the academic body of knowledge We AdviseProvide leaders unique insight and strategic analysis on the complex problems posed by terrorism today
  • Letters from Abbottabad: Bin Ladin Sidelined?

    05.03.2012

    This report is a study of 17 de-classified documents captured during the Abbottabad raid and released to the Combating Terrorism Center (CTC). They consist of electronic letters or draft letters, totaling 175 pages in the original Arabic and 197 pages in the English translation. The earliest is dated September 2006 and the latest April 2011.  These internal al-Qa`ida communications were authored by several  leaders, most prominently Usama bin Ladin.  In contrast to his public statements that focused on the injustice of those he believed …

The CTC Sentinel

About the Sentinel

The Sentinel is a monthly, independent publication that leverages the Center’s global network of scholars and practitioners to understand and confront contemporary threats posed by terrorism and other forms of political violence.

Contributing Author(s):
  • Derek Henry Flood
  • David Cook
  • Pascale Combelles Siegel
  • Daud Khattak
  • Zia Ur Rehman
Contributing Author(s):
  • Jacob Aasland Ravndal
  • Aaron Y. Zelin
  • Andrew Lebovich
  • Robert Mazur
  • Sentinel Staff
  • Arif Rafiq

Recent Publications

Terrorist Ideology

Understanding the ideological underpinnings of violent groups is crucial to countering and defeating terrorist entities. This research program examines the ideas driving modern terrorism, the transmission of those ideas, and the doctrinal schisms within violent movements.

Debates and Divisions within al-Qa'ida's and its Periphery
Author(s):
  • Anne Stenersen
  • Bernard Haykel
  • Brynjar Lia
  • Marc Lynch
  • Mohammed M. Hafez
  • Reuven Paz
  • Steven Brooke
  • Vahid Brown
Editor(s):
  • Assaf Moghadam
  • Brian Fishman

Terrorist Strategy and Structure

The landscape of terrorist actors and the strategies they employ are consistently evolving. The strategy and structure program examines the actors, organizational platforms, and violent methods that terrorists use in pursuit of their goals.

Editor(s):
  • Gabriel Koehler-Derrick
Author(s):
  • Dominick Wright
  • Scott Helfstein

South Asia

South Asia faces unique and complex challenges stemming from growing anti-Western sentiment, nuclear armed regional rivals, and a complex blend of militant actors. This research program contextualizes the nature of the terrorist threat emanating from and developing within Pakistan, Afghanistan, India, and Bangladesh.

Author(s):
  • Don Rassler
  • Vahid Brown
Identity Politics, Iranian Influence, and Tit-for-Tat Violence
Author(s):
  • Hassan Abbas

Emerging Threats

The Emerging Threats research program informs the academic and policy communities on nascent and underappreciated terrorist threats. This program looks across the phenomenon of terrorism and focuses on the evolution, innovation among existing terrorist actors, and the emergence of new threats.

Author(s):
  • Clint Watts
  • Jacob Shapiro
  • Vahid Brown