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Thomas Joscelyn

Senior Fellow

Areas of Impact:

Sub-Saharan Africa, North Africa, Sudan, Global War on Terrorism, Somalia, Terrorist Detainees, Islamism, Iraq, Al Qaeda, Afghanistan

Biography:

Thomas Joscelyn is a senior fellow at the Foundation for Defense of Democracies and senior editor of FDD's Long War Journal, a widely read publication dealing with counterterrorism and related issues. Much of his research focuses on how al Qaeda and the Islamic State (or ISIS, ISIL) operate around the globe. He has served as a trainer for the FBI’s Counterterrorism Division. Mr. Joscelyn has testified before Congress on fourteen occasions, including before the Senate Committee on Foreign Relations, House Homeland Security Committee, House Foreign Affairs Committee, House Armed Services Committee and House Judiciary Committee. He was the senior counterterrorism adviser to Mayor Giuliani during the 2008 presidential campaign. Mr. Joscelyn is also a frequent contributor to The Weekly Standard. His work has been published by a variety of other publications and cited by the Associated Press, Reuters, The Washington Post, USA Today, TIME, Foreign Policy, and many others. He makes regular appearances on television and radio programs.

Thomas Joscelyn is a senior fellow at the Foundation for Defense of Democracies and senior editor of FDD's Long War Journal, a widely read publication dealing with counterterrorism and related issues. Much of his research focuses on how al Qaeda and the Islamic State (or ISIS, ISIL) operate around the globe. He has served as a trainer for the FBI’s Counterterrorism Division. Mr. Joscelyn has testified before Congress on fourteen occasions, including before the Senate Committee on Foreign Relations, House Homeland Security Committee, House Foreign Affairs Committee, House Armed Services Committee and House Judiciary Committee. He was the senior counterterrorism adviser to Mayor Giuliani during the 2008 presidential campaign. Mr. Joscelyn is also a frequent contributor to The Weekly Standard. His work has been published by a variety of other publications and cited by the Associated Press, Reuters, The Washington Post, USA Today, TIME, Foreign Policy, and many others. He makes regular appearances on television and radio programs.

Mr. Joscelyn has constructed dossiers for hundreds of terrorists during the course of his work. 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.” In 2007, he published a monograph titled, Iran’s Proxy War Against America, which details Iran’s decades-long sponsorship of America’s terrorist enemies. In 2008, he completed an exhaustive review of the Guantanamo Bay detainee population, cataloging and analyzing thousands of pages of declassified documents.  

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14th May 2018 – FDD's Long War Journal

As US relocates embassy to Jerusalem, al Qaeda leader condemns international system

Thomas Joscelyn

Al Qaeda has released a message from its leader, Ayman al Zawahiri, that is timed to coincide with the Trump administration's relocation of the American embassy in Israel to Jerusalem. Zawahiri notes that the decision caused a "big uproar," but he reminds listeners that Tel Aviv is also supposedly Muslim land. He calls for jihad to uproot the entire international system led by the US and the UN. more...

Analysis & Commentary

14th May 2018 – FDD's Long War Journal

As US relocates embassy to Jerusalem, al Qaeda leader condemns international system

Thomas Joscelyn

Al Qaeda has released a message from its leader, Ayman al Zawahiri, that is timed to coincide with the Trump administration's relocation of the American embassy in Israel to Jerusalem. Zawahiri notes that the decision caused a "big uproar," but he reminds listeners that Tel Aviv is also supposedly Muslim land. He calls for jihad to uproot the entire international system led by the US and the UN. more...

14th May 2018 – Syndicated

The John Batchelor Show

Bill Roggio, Thomas Joscelyn

FDD's Bill Roggio and Thomas Joscelyn join the John Batchelor show to discuss the Taliban surge in Farah city in western Afghanistan. more...

14th May 2018 – Syndicated

The John Batchelor Show

Bill Roggio, Thomas Joscelyn

FDD's Bill Roggio and Thomas Joscelyn join the John Batchelor show to discuss the recent terrorist attack in Paris. more...

13th May 2018 – FDD's Long War Journal

Paris knife terrorist swore allegiance to ISIS leader before attack

Thomas Joscelyn

The Islamic State's Amaq News Agency has released a video purportedly showing the young man who attacked several people with a knife in Paris yesterday. FDD's Long War Journal cannot independently verify that the person shown was responsible for the knife attacks. However, the footage is similar to previous videos released by Amaq after a series of small-scale attacks in Europe since mid-2016. more...