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, …

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

Any sharp drawdown of U.S. forces in Iraq grants Iran a golden opportunity to expand its influence there and threatens to inflame sectarian tensions.