(later as Hayat Tahrir al-Sham) and their allies on the other. After 7 February, the clashes also included Jund al-Aqsa as a third belligerent, which had re-branded itself as Liwa al-Aqsa and was attacking the other combatants. The battles were fought in the Idlib Governorate and the western countryside of the Aleppo Governorate.

The Khan Shaykhun chemical attack took place on 4 April 2017, on