The unprecedented Iranian attack on Israel presents U.S. officials with mounting challenges in trying to contain the conflict and maintain a deterrence against Iran and its allies.

Iran has built considerable political clout in Iraq since the fall of Saddam Hussein’s regime. Its wide sphere of influence could be expanding, raising domestic tensions and alarming U.S. policymaker…

With six Arab states having established relations with Israel, a new Middle East is taking shape. But the diplomatic progress, facilitated by the Trump administration’s compensation to those states, …

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.

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