Katherine Zimmerman is a research fellow at the American Enterprise Institute and the lead analyst on al Qaeda for AEI’s Critical Threats Project. Her work has focused on al Qaeda’s affiliates in the Gulf of Aden region and associated movements in western and northern Africa. She specializes in the Yemen-based group, al Qaeda in the Arabian Peninsula, and al Qaeda's affiliate in Somalia, al Shabaab. Katherine has testified in front of Congress and briefed Members and congressional staff, as well as members of the defense community. She has written analyses of U.S. national security interests related to the threat from the al Qaeda network for the Wall Street Journal, Washington Post, CNN Global Public Square, and the Huffington Post, among others. Katherine graduated with distinction from Yale University with a B.A. in Political Science and Modern Middle East Studies.
Her biography is available here.