In southern Yemen, at least 30 soldiers were killed and 60 others injured Sunday, after Houthi rebels fired missiles from a drone at a Saudi-led coalition air base. The attack struck dozens of soldiers on morning military exercises. It came as U.N.-brokered peace talks between the Saudi-led coalition and the Houthis have stalled. Since 2015, Saudi-led coalition airstrikes in Yemen have killed nearly 1,500 civilians per year on average, a quarter of them children, while sparking the world’s worst humanitarian crisis.