Terrorism & Violent Extremism

Counterterrorism

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A general view shows the UN High-level Conference of Heads of Counter-Terrorism Agencies of Member States at UN Headquarters on June 19, 2023 in New York. (Photo by YUKI IWAMURA/AFP via Getty Images)

Time for Rightsizing: Change is Coming to the UN Counterterrorism System

The UN80 reform process, done well, offers a chance to streamline sprawling -- and too often harmful -- structures to focus on the U.N.’s core purpose.

Call Them What They Are: Time to Fix Cyber Threat Actor Naming

The Microsoft-CrowdStrike partnership on cyber threat actor naming conventions is welcome, but more comprehensive reform is needed to serve defenders and the public.
Military forces who are affiliated with Yemen's Houthi group take part in a mass protest held against the Israeli continued bombardment and blockade of people in the Gaza Strip on May 23, 2025 in Sana'a, Yemen. (Photo by Mohammed Hamoud/Getty Images)

Terrorism and the Threat of Weak States

State weakness boosts the organizational vitality of resident terrorist groups, enabling them to not only live longer but also expand their terrorist activities.
Katherine Keneally and Julia Ebner answer questions at the Calleva-Airey Neave Global Security Seminar Series hosted by Oxford University’s Blavatnik School of Government on May 1, 2025.

Q&A with Katherine Keneally: The Future of Terrorism Detection and Analysis

How should we understand evolving terrorism, and what’s needed for better threat assessment? Julia Ebner discussed this with expert Katherine Keneally.
The sign at the FBI headquarters building reads, “J. Edgar Hoover FBI Building.”

Nihilistic Violent Extremism: A Valuable Stride Forward in American Counterterrorism

Nihilistic violent extremism might even be considered part of a fourth generation of online radicalization, blurring the lines between killers and terrorists.
A line of people, some under umbrellas, with a woman at the center holding a poster with photos on it and the message, in Spanish, saying, "He has worked for a solid company since he was 18. An investigation is urgently needed for his prompt release. No more unjust detentions."

El Salvador’s Authoritarian Slide Should Hold Lessons – Not Examples – for the U.S.

In fighting rampant gang violence, President Bukele has turned El Salvador into even more of a lawless, opaque State.
In this handout photo provided by the Salvadoran government, members of the Salvadoran army stand guard at the gates of the Terrorism Confinement Center (CECOT) at CECOT on March 16, 2025 in Tecoluca, El Salvador.

Deportation to CECOT: The Constitutional Prohibition on Punishment Without Charge or Trial

Sending migrants to El Salvador’s CECOT prison raises grave constitutional concerns under the Fifth and Sixth Amendments.
Signage and flowers are placed on a tree reads "ICE kidnapped our neighbor"

The Fox TV Problem with Deporting International Students

The SCOTUS decision in FCC v. Fox TV emphasized fair notice, a bedrock requirement of due process that could shield students from removal.
U.S. President Donal Trump shakes hands with El Salvador Presidnet Nayib Bukele next to an American flag.

The New Transparency Rules and the El Salvador Detention Agreement

A 2022 statute could force disclosure of any U.S.-El Salvador agreements connected to the facility where Kilmar Abrego Garcia is detained
Screenshot of Form G-325R Biographic Information (Registration)

The Immigration Registration Trap Goes Live

When a court finally addresses the merits of the rule, there are strong procedural and substantive grounds to challenge its implementation.
Abstract image of human eye with retinal circuit on a black background.

The Dangerous Foreign Intelligence Exception Loophole in the Hasbajrami Decision

The Hasbajrami decision’s expansive view of the FISA foreign intelligence exception threatens to swallow the rule that the Fourth Amendment's warrant requirement applies to U.S.…
The photo shows four very long, shallow docked boats arrayed next to each other diagonally across the image, seemingly made of iron or metal, carrying belongings and one with a number of adults and children in it. Other people are on land at the back of the image, next to a dirt road beside fields stretching into the distance.

Visa Revocations Disregard South Sudan War Risks, Overlook U.S. Communities’ Embrace of Refugees

The breadth and depth of support for South Sudanese across red and blue states has origins in evangelical backing for the young country.
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