Saudi-Turkish-ISIS-AlQaeda ground assault

"Turkey particularly wants to prevent the Syrian Kurdish militia force, the People’s Protection Units (YPG), advancing west of the Euphrates and linking up with the Kurdish enclave of Afrin. This would cut the supply lines of Isis and the non-Isis opposition from Turkey to Aleppo." "There is the danger that any Saudi-Turkish ground assault would be in association with local opposition fighters grouped under the umbrella organisation Jaish al-Fatah; this is supported by Turkey and Saudi Arabia and is led by the al-Nusra Front, al-Qaeda’s Syrian branch, and by the ideologically similar Ahrar al-Sham."