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 dynamics in Yemen, al Shabaab in Somalia, and Salafi-jihadi groups in the Sahel region. Ms. Zimmerman  is also an adviser to AEI’s Critical Threats Project. She helped create and then directed the research for CTP’s open-source intelligence team of 15 staff and interns.

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 HuffingtonPost, 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.

She is a term member with the Council on Foreign Relations and a member of the RESOLVE Network Research Advisory Council.