“Chemical weapons were likely used in five out of seven attacks investigated by U.N. experts in Syria, where a 2 1/2-year civil war has killed more than 100,000 people, according to the final report of a U.N. inquiry published on Thursday. U.N. investigators said the deadly nerve agent sarin was likely used in four incidents, in one case on a large scale.”
Source: U.N. confirms chemical arms were used repeatedly in Syria | Reuters