Hayat Tahrir al-Sham (formerly Jabhat al-Nusra, the Syrian branch of al-Qaeda) and its allied groups of the Free Syrian Army (FSA) have united efforts with ISIS in an attempt to cut off the Salamiyah-Ithriyah-Khanassir-Aleppo road, the only government supply line to Aleppo city.
On August 23 and August 24, HTS artillery units conducted a massive bombardment campaign shelling Syrian Arab Army (SAA) positions along the road. At the same time, ISIS attacked the SAA at Wadi al-Adib and Shayk Hilal and even temporarily cut off the road near as-Saan.
Pro-militant sources, including the Syrian Observatory for Human Rights (SOHR), claimed that the SAA suffered a number of tactical setbacks and that ISIS could use the situation in order to recapture a large area in the Uqayrabat pocket.
However, then reports started appearing that the SAA, the Qalamoun Shield Forces and the National Defense Forces (NDF), backed up by Russian attack helicopters, launched a counter-attack in the area and recaptured some points that had been lost to terrorists.
Clashes are ongoing. The situation remains tense.