Syria crisis 'a wake-up call'
The UN's special envoy says there will be major diplomatic action
The war in Syria has lasted longer than the Second World War and shows no sign of ending. The tensions were raised further this month over the use of alleged chemical weapons. It was a moment that threatened to escalate into an "international catastrophe", according to the UN's special envoy for Syria. He tells Today that the crisis has been a "wake-up call" for all sides. (Image: Bomb blast in Syria; credit: Getty Images)