The offensive originated from the ISIL - held town of Al - Shaddadah , south of Al - Hasakah .
Was the jihadist organizations 's third assault on the city in 2015 .
The offensive originated from the ISIL - held town of Al - Shaddadah , south of Al - Hasakah , and was the jihadist organizations 's third assault on the city in 2015 .