Against the background of problems with the storm itself Raqqa and high losses SDF in an attempt to break the defense of militants in urban areas (which in General follows the problems faced by the Iraqi army during the storming of Mosul), the Americans in the last month significantly increased its military presence in Northern Syria -this applies both to the modernization of the existing network databases (as a full-fledged, and various logistical units designed for military interaction with SDF/YPG) and the supply of additional batch of small arms, and various light armored vehicles and specialized engineering vehicles.