The Syrian air Force launched about 1,592 Strikes across Syria over the past month, killing at least 396 civilians, the Syrian Observatory for Human Rights said on Wednesday. The Britain-based group, which monitors the war in Syria using sources on the ground, said at least 1,500 people were also wounded in the attacks, which were carried out by warplanes and helicopters which dropped "barrel bombs", steel drums full of shrapnel and explosives. They also hit the eastern Deir al-Zor province, where U.S.-led forces have been bombing Islamic State militants.