Terrorists of the Jabhat Fateh al-Sham (previously known as the al-Nusra Front) group have launched a large-scale offensive against militants of Ahrar al-Sham and the Jaish al-Mujahadeen coalition of the Free Syrian Army (FSA) armed opposition faction in Idlib and Aleppo provinces in northwestern Syria. According to some reports, the the Harakat Nour al-Din al-Zenki Islamist group is also involved in the infighting on the side of the al-Nusra Front.