The U.S.-led international coalition launched Saturday several airstrikes across Syria against Islamic State (IS) areas, killing 159 civilians, Syrian Observatory for Human Rights (SOHR). "The number of civilians who were killed in the coalition airstrikes on oil areas, where there are oil refineries, oil wells, building and vehicles, in the provinces of Al Hasakah, Deir Ezzor, Al Raqqa, Aleppo and Idlib has risen to 159," SOHR said. The observatory indicated that 31 children including, 19 female above the age of 18, 13 male above the age of 18, and an 18 years old boy were killed in the coalition's airstrikes. The coalition has launched its war against IS positions in Aug. 2014.