raqqa
The figure is hundreds more than the number the U.S.-led coalition claims over the entire four-year campaign against IS, the groups said.
U.S.-backed forces have finally retaken the Syrian city of Raqqa.
The poorly equipped and thinly staffed facility is inaccessible to most of the population.
The U.S. war against civilians in Syria
WHAT'S HAPPENING
Iraq's abuse of civilians will make it easy for the next version of the extremist group to recruit.
The extremist group has tarnished the idea of a caliphate in such a way that it can never be established again.
Rebels announced an major assault on the militant group's de facto capital.
The new deployment increases U.S. forces in Syria six-fold to about 300.
The filmmaker and activist had worked with the group Raqqa is Being Slaughtered Silently.
Ahmad Mohamed al-Mousa was killed in the northern province of Idlib on Wednesday by unknown masked assailants.