Ayman al-Zawahiri leaves behind a robust network of strategically aligned but tactically independent al-Qaeda affiliates operating in Africa, Asia, and the Middle East.

Targeted operations by U.S. forces have eliminated notorious leaders of armed extremist groups, al-Qaeda’s Ayman al-Zawahiri the latest among them. But how much they disrupt these terrorist organizat…

A year after the U.S. withdrawal, half of Afghanistan’s population faces a food emergency, and the Taliban regime acts with cruelty and indifference.

Al-Qaeda could benefit from the death of the Islamic State’s leader, potentially regaining its worldwide reach and influence.

Members of Egypt’s jihadi movement played important roles in inspiring and plotting the 9/11 attacks. Egypt still struggles with some of the factors that gave rise to such extremism.