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. Its surviving members were on the run or in hiding. Though it took nearly 10 years, the U.S. succeeded in killing al-Qaida’s founding leader, Osama bin Laden. Since 2014, al-Qaida has been overshadowed by its former ally al-Qaida in Iraq, now calling itself the Islamic State.
In other words, al-Qaida should