UN: Recent Alleged Use of Chemical Weapons in Syria a "Serious Escalation"
Opposition activists say over 1,000 people were killed yesterday in a chemical attack
UN officials say alleged chemical weapons attacks which Syria's opposition says killed hundreds near Damascus were a "serious escalation".
Deputy Secretary-General Jan Eliasson made the comments after briefing an emergency UN Security Council meeting about Wednesday's incident.
The Security Council also said that clarity was needed over the attacks.