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.

Rapprochement between Turkey and Saudi Arabia will likely restore a vital trade link as Erdogan’s government moves to improve regional ties amid deep economic troubles.

The United States has granted tens of thousands of special visas to Afghans who aided U.S. forces, but many others are still waiting. How does this compare with previous efforts?

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.