Analysis of evidence collected by UN weapons inspectors in Syria will take up to three weeks, the Organisation for the Prohibition of Chemical Weapons (OPCW) said in a statement.
The US is considering a "limited act" in response to the alleged use of chemical weapons by the Syrian army, but how will Assad respond?
Will America go it alone in Syria after the Government's defeat in the Commons last night? The answer is yes. Emphatically yes.
As the West wakes up to another day, it is not just Prime Minister David Cameron who has a Syria problem - so does President Barack Obama.