The UK has accused Syria and Russia of preventing independent chemical weapons experts from entering the city of Douma, hit by a suspected gas attack that Western leaders have blamed on the Syrian government.
A fact-finding team from the Organization for the Prohibition of Chemical Weapons (OPCW) arrived in Syria on Saturday, the same day the US, UK and France carried out airstrikes against Syrian government targets in response to the April 7 attack in Douma.
