Katherine Zimmerman is a fellow at the American Enterprise Institute (AEI), where she focuses on the global Salafi-jihadi movement and counterterrorism. She also studies the al Qaeda network and related trends in the Middle East and Africa, including al Qaeda in the Arabian Peninsula and Yemen, al Shabaab in Somalia, and al Qaeda in the Sahel. She is also an adviser to AEI’s Critical Threats Project.

Ms. Zimmerman has testified before Congress about the threats to US national security interests emanating from al Qaeda and its network. In addition, she has briefed members of Congress, their staff, and US military, diplomatic, and intelligence community personnel.

Her commentary and analyses have been widely published, including in CNN.com, Foreign Affairs, Foreign Policy, FoxNews.com, The Hill, The Huffington Post, The Wall Street Journal, and The Washington Post.

She is often interviewed, and her appearances include the Associated Press, BBC News, Bloomberg News, CNBC, CNN’s “The Situation Room,” Fox News Channel’s “Special Report with Bret Baier,” Voice of America, and Yahoo Finance.

Ms. Zimmerman is a term member of the Council on Foreign Relations and a member of the RESOLVE Network Research Advisory Council. She holds the BA in Political Science and Modern Middle Eastern Studies from Yale University, and an MA in Terrorism, Security and Society from King’s College, London.