Why al-Qaida is still strong 17 years after 9/11
- Written by Tricia Bacon, Assistant Professor of Justice, Law & Criminology, American University School of Public Affairs

Seventeen years ago, on Sept. 11, 2001, al-Qaida conducted the most destructive terrorist attack in history.
An unprecedented onslaught from the U.S. followed. One-third of al-Qaida’s leadership was killed or captured in the following year. The group lost its safe haven in Afghanistan, including its extensive training infrastructure there....