Who was Ayman al-Zawahri? Where does his death leave al-Qaida and what does it say about US counterterrorism?
- Written by Haroro J. Ingram, Senior Research Fellow at the Program on Extremism, George Washington University

Ayman al-Zawahri, leader of al-Qaida and a plotter of the 9/11 terrorist attacks, has been killed in a drone strike in the Afghan city of Kabul, according to the U.S. government.
Al-Zawahri was the the successor to Osama bin Laden and his death marked “one more measure of...