UN weapons inspectors have confirmed that a chemical 'substance' was used in an attack in Syria that killed hundreds.
The envoy made a third successful attempt today to inspect an area in Damascus after suspending two attempts to gain access to the site.
The incident has sparked international condemnation with the US and Britain preparing for military action against Syrian Government forces.
Britain has confirmed it is to submit a draft resolution to the UN Security Council on Syria today.
Speaking in the Hague, the UN Secretary General Ban Ki-Moon has urged all sides to prioritise diplomacy over planning military action:
