Syria conflict: Chlorine gas used eight times, says UN
The United Nations has accused the Syrian government of using chemical agents in eight separate incidents in a new report on war crimes there.
The UN also says Islamic State militants carried out frequent public executions that civilians, including children, were forced to watch.
Islamic State, which now controls a large part of Syria, is one of the groups fighting the government of Syrian President Bashar al-Assad.
The conflict is in its fourth year.