U.S.-backed Syrian Kurdish forces began their assault on an Islamic State-held air base in northern Syria on Sunday, activists said, as reports circulated that residents were evacuating the nearby city of Raqqa, the militants' de facto capital. The air base lies 28 miles west of Raqqa. Other SDF forces are within 6 miles of the city, approaching from the north. The SNC said it believed coalition forces were behind an airstrike that killed at least 30 civilians sheltering in a school in the countryside outside Raqqa on March 21. The U.S. has provided substantial air and ground support to the Kurdish-led Syrian Democratic Forces, who are closing in on Raqqa as well as the Tabqa Dam.

Source: Fox News March 26, 2017 18:11 UTC