The Syrian government has finally given the go-ahead to a visit by a United Nations team of experts who will investigate claims of chemical weapons use.
It has taken nearly two weeks of arguing over the details but the visit is now said to be imminent.
The UN has received 13 reports of possible use – one from Syria’s government and the rest from Britain, France and the United States.
However both the regime and Syria’s opposition have accused each other of using them.
The UN says the inspection could take up to two weeks.
Footage of wounded civilians said to have been suffering from either sarin or nerve gas poisoning has been put onto the internet but as yet it remains unverified.
The UN inquiry will try only to establish whether chemical weapons were used, not who used them.