Understanding incels, school shooters, and the new category of terrorism, “nihilistic violent extremism.”

European countries are designating and prosecuting Hamas’s financial lifeline, but far more needs to be done.

A leaked directive recasts counterterrorism around “Antifa,” hollowing out post-Church Committee safeguards while the administration claims restraint.

Terrorism researchers must recognize ambiguities in inclusion, coding, and analysis as they use data to inform policy.

The Justice Department’s tacked-on charges are just for show. The larger plan is not.

A review of Aviva Guttmann, “Operation Wrath of God: The Secret History of European Intelligence and Mossad’s Assassination Campaign” (Cambridge University Press, 2025)

A review of Tim Weiner, “The Mission: The CIA in the 21st Century” (Mariner Books, 2025).

Groups are increasingly using weaponized drones across the continent.

The White House’s words will change behavior long before any court can.

Reading the president’s new orders on political violence and terrorism.