The Syrian Arab Army (SAA), Hezbollah, the Tiger Forces and their allies have started a military operation to clear the remaining ISIS-held points on the western bank of the Euphrates.
The Syrian military has also deployed reinforcements to the area from the government-held parts of Hasakah.
ISIS has a large number of mobile assault units operating in the Homs desert and Euphrates Valley. This allows the terrorist group to conduct raids against the advancing government forces avoiding direct clashes.
This will be the main SAA obstacle in the area.