The battle over the Trump administration’s executive order on immigration raises weighty constitutional questions involving presidential power and the judiciary’s role in national security, explains …

The fallout that has followed Saudi Arabia’s execution of a Shia protest leader is likely to tamp down dissent at home while provoking regional conflicts, says expert Toby Matthiesen.

Russia’s military buildup in Syria could set back the self-proclaimed Islamic State and lay the groundwork for a political transition, but could also lead to a confrontation with the United States, s…

King Abdullah’s succession plan for Saudi Arabia’s aging leadership may be his most important legacy at a time of multiple crises in the Middle East, says expert Rachel Bronson.