Syrian Liberation Front–Tahrir al-Sham conflict

On 19 February 2018, heavy clashes erupted between the newly established Syrian Liberation Front, which consists of Ahrar al-Sham and the Nour al-Din al-Zenki Movement, backed by the Suqour al-Sham Brigades, and Hay'at Tahrir al-Sham (HTS) in the western Aleppo Governorate. The conflict soon spread to the Idlib Governorate and the SLF captured several towns from HTS. A ceasefire between the two groups was reached on 24 April 2018.

Source: Wikipedia — Syrian Liberation Front–Tahrir al-Sham conflict (CC BY-SA 4.0)