President Donald J. Trump’s announcement of a troop withdrawal in northern Syria ahead of a Turkish invasion could revive the Islamic State and the Syrian civil war, and signal the end of U.S. influe…

Tensions over Israeli treatment of Palestinians in Jerusalem have spurred the worst violence between the two sides in years, but the eruption seems unlikely to prompt a strong international reaction…

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.

The killing in Baghdad of Iranian Quds Force commander Qasem Soleimani escalates an already tense contest in Iraq between U.S. and Iran-backed forces, makes the battle against the Islamic State more …

An imprisoned opponent, dire economic conditions, and ongoing tensions with the United States all pose challenges to President Erdogan’s increasingly erratic leadership.