Unknown warplanes targeted an arms depot and posts of Iranian-backed militias in eastern Syria, near the Iraqi border, killing at least 18 fighters in a nighttime attack, Syrian opposition activists said Monday. A Syrian security official said Israeli jets staged the airstrikes, but denied there were any casualties. The attack comes amid rising tensions in the Middle East and the crisis between Iran and the U.S. in the wake of the collapsing nuclear deal between Tehran and world powers.
