The U.S. Navy’s dominance of the world’s oceans has made it an indispensable foreign policy tool and a guarantor of global trade, but a mix of challenges is raising difficult questions about its futu…

U.S. administrations have backed sweeping efforts for societal change in the Middle East in recent decades, with poor results. But Washington can still achieve more modest, essential goals in the reg…

U.S.-Iranian conflict resolution is in flux following withdrawal from the nuclear deal, and it remains unclear whether sanctions will be sufficient to force Iran back to the negotiating table. A deeper dive into the energy realpolitik of the matter reveals a host of barriers to improving the status quo in the Middle East.

As the oil price war continues, markets are hanging on every word coming from Washington, Moscow and Riyadh, amid signs that diplomacy could be afoot. A statement by the Kremlin’s presidential spokes…