Reducing threats is a major challenge for both governments and citizens.
Understanding Terrorism Throughout History
Scholars use two strategies to organize the history of modern terrorism.
Who Gets Designated a Terrorist and Why?
In the United States, policy often plays a role.
Terrorism by the Numbers
What the data reveals about terrorist attacks around the world.
263 government organizations
were created or reorganized following 9/11.
Source: Washington Post
U.S. Counterterrorism: Evolution Over The Past Century
The history of counterterrorism in the United States is more than a list of policies.
of the public says that the ability of terrorists to launch another major attack on the United States is greater than it was at the time of the 9/11 attacks.
Source: Pew Research Center
Tools of Counterterrorism
Learn about the strategies in place to prevent terrorism by examining the options available to national security experts.
Identity and Radicalization
Understanding what motivates someone to commit a terrorist act is key to combating extremism.
How Terrorism Affects You
Source: Khaled Abdullah/Reuters
This Is Your Brain on Terrorism
Although terrorism kills very few Americans, constant coverage makes us perceive a widespread threat.
Source: Sara K. Schwittek/Reuters
How a Decade of Terror Changed America
Reflections on the profound changes to U.S. policy, American society, and our collective understanding of war in the years following 9/11.
More From CFR
From Tragedy to Prevention: Lessons Learned From Terrorist Attacks
Photo: Darren Staples/Reuters
Women Are Critical to Counterterrorism
Photo: Christopher Herwig/Reuters