Tom Joscelyn

Senior Fellow

Tom Joscelyn (@thomasjoscelyn) is a Senior Fellow at Just Security and a Senior Fellow at the Reiss Center on Law and Security. He was most recently a senior professional staff member on the House Select Committee to Investigate the January 6th Attack on the U.S. Capitol. He is one of the principal authors of the committee’s final, 814-page report. Prior to joining the committee, Tom was a senior fellow at the Foundation for Defense of Democracies (FDD) and senior editor of FDD’s Long War Journal, a widely read publication dealing with counterterrorism and related issues.

Much of Tom’s research focuses on how terrorist and extremist groups operate. He has testified as an expert witness before Congress on more than 20 occasions, including before the Senate Committee on Foreign Relations and the Senate Committee on Banking, Housing, and Urban Affairs, as well as the House Homeland Security Committee, the House Foreign Affairs Committee, the House Armed Services Committee, and the House Judiciary Committee. His testimony covered a range of complex counterterrorism and foreign policy issues.

Tom is the coauthor of Enemies Near and Far: How Jihadist Groups Strategize, Plot and Learn (Columbia University Press, 2022). He has authored hundreds of articles since he first began writing for the public in 2004. His work has been published by The New York TimesThe Wall Street JournalPolitico, and The Dispatch, among others. The Daily Beast has described him as one of “the most trusted authorities on the al-Qaeda network because of his encyclopedic knowledge of terrorist biographies.” He previously served as a trainer for the FBI’s Counterterrorism Division.

Tom has also regularly appeared on television, including on CBS News, CNN, Fox News, and MSNBC. He appeared in the History Channel’s documentary, ISIS: Rise of Terror (2016). Tom has also been featured on CBS News’ 60 Minutes.

Articles by this author:

Anatomy of MAGA Conspiracy of Assassination Attempt Against Trump: What It Tells Us

by and

May 23rd, 2024

Key January 6th Instigator, Nick Fuentes, Reinstatement on Twitter/X: The Implications

by and

May 4th, 2024

Keeping Count: Major Adverse Legal Findings Against Donald Trump (Nov. 2020-2024)

by and

May 2nd, 2024

Trump’s Promise to Free Jan. 6 Inmates in DC Jail — Almost All of Them Assaulted Law Enforcement Officers

by , and

Apr 2nd, 2024

How Trump Valet’s Testimony Supports DOJ’s January 6th Case


Mar 22nd, 2024

Anatomy of a Conspiracy Theory and a Smear: Still, No Evidence of Trump Order for 10,000 Guard on January 6th


Mar 12th, 2024

Dissecting Trump’s “Peacefully and Patriotically” Defense of the January 6th Attack

by , and

Feb 8th, 2024

Michigan False Electors Prosecution Faces A Court Test

by , , and

Dec 11th, 2023

How DOJ’s New Reveal – Trump Agent’s Effort to Cause Violence to Stop Vote Count – Matches Trump Election Lie About Detroit

by , and

Dec 7th, 2023

10 Questions Prosecutors Should Ask Ken Chesebro

by and

Dec 4th, 2023

Kenneth Chesebro: A Chief Architect of the False Elector Scheme

by and

Nov 28th, 2023

Dissecting Kenneth Chesebro’s Proffer Statement: What’s Hidden, What’s Revealed

by and

Nov 20th, 2023

DOJ Will Use Trump’s Continued Embrace of Jan. 6 Rioters to Prove Its Case

by , and

Nov 10th, 2023

Tucker Carlson, Viktor Orbán and the Anti-Democracy Playbook

by and

Sep 15th, 2023

Comparing the Trump Indictment and the January 6th Select Committee’s Final Report


Aug 3rd, 2023

How Trump’s CNN Town Hall Remarks Put Him in Greater Legal Peril for Jan. 6 Investigations

by , and

May 12th, 2023

Profiles of the January 6th Inmates in the D.C. Jail

by , and

Mar 20th, 2023