Use of chemical weapons 'becoming routine in Syria'

The use of chemical weapons is “becoming routine in the Syrian civil war”, a US official has said.

Rafael Foley was speaking at a closed meeting of the Organisation for the Prohibition of Chemical Weapons’ (OPCW) executive council, which was called to discuss recent findings including that a “non-state actor” likely used the chemical agent sulfur mustard, or mustard gas, during fighting in the Syrian town of Marea in August.