The Syrian Kurdish People’s Protection Units (YPG) have launched an offensive against ISIS outside Jarablus, challenging Turkey’s plans to establish a “safe zone,” roll back ISIS and prevent Kurdish forces from expanding along its border.

“The YPG successfully carried out its first operation to breach ISIS defensive lines west of the Euphrates River on Thursday night, managing to kill 12 of members of the group to the East of Jarablus,” Bas News reported Friday morning.

The Iraqi Kurdish outlet cited a military field source as saying that a group of YPG fighters had crossed secretly on boats to the west bank of the Euphrates River and reached ISIS positions east of Jarablus, where fierce clashes erupted. […]