 One day later, ISIS executed the rebel commander of al-Nusra in Deir ez-Zor.ISIS also wrested away all rebel-held towns and villages across the province, assuming control of between 95% and 98% of Deir Ez-Zor province.On 17 August, SOHR said that in the two previous weeks Islamic State (IS) jihadists killed over 700 tribal members in eastern Syria in the oil-rich Deir ez-Zor Governorate.