National Front for Liberation–Tahrir al-Sham conflict

The National Front for Liberation–Tahrir al-Sham conflict began on 1 January 2019 during clashes between Nour al-Din al-Zenki Movement and Hayat Tahrir al-Sham (HTS), after HTS launched an attack against the group in Darat Izza, Taqad, and Khan al-Asal fronts in rebel-held western Aleppo. The conflict ended on 10 January 2019, after the National Front for Liberation agreed to withdraw, allowing HTS to take over almost all of the remaining opposition-held areas of the Idlib pocket.

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