UN Secretary General Ban Ki-moon told permanent members of the Security Council that analysis of samples taken by inspectors in Syria could take two weeks, a diplomat said.
Syrian government officials were watching President Obama's White House speech. I didn't see them smile but there's no doubt they did.
Footage has emerged which appears to show an horrific incident incendiary weapons in northern Syria near a school.
After last week's clouds of poison gases in the suburbs, people in Damascus are bracing themselves for the expected missile retaliation.