Russia's foreign ministry has called for a "fair and professional" investigation into claims troops loyal to Syrian President Bashar al-Assad have carried out a chemical attack near Damascus.
The ministry said there is evidence suggesting the reported attack could be a "pre-planned provocation" by the opposition timed for the presence of UN inspectors in the country.
Britain has directly accused the Assad regime of gassing hundreds of Syrian civilians amid warnings only 48 hours remain to find proof.
New videos show the eyewitness accounts of four men who witnessed an alleged chemical attack on Zamalka, a suburb of Damascus.
These are the images of the remains of rockets which, according to the men stood by them, delivered poisonous gas to a suburb of Damascus.