>> Bashar al-Assad's government is to blame for a chemical attack that killed dozens of people in April, the UN says. According to the report released on Thursday, Syrian forces released sarin in the opposition held town of Khan Sheikhoun in the northern province of Idlib. UN Investigators have already found Syrian government forces responsible for three chlorine gas attacks in 2014 and 15.
Damascus denies using chemical weapons. It agreed to destroy its stocks in 2013 under a deal brokered by Moscow and Washington. The latest report also said Islamic State had released sulfur mustard in the town of Umm Hawsh in September, and warned that other groups would follow suit if the use of chemical weapons was not stopped now.
UN investigators worked with the organization for the prohibition of chemical weapons under a joint mechanism set up two years ago. A separate fact finding mission by that organization had already determined in June that sarin was used in Khan Sheikhoun. That verdict prompted the United States to launch missiles at a Syrian air base.