Theresa May has said the Syrian president, Bashar al-Assad, and his Russian backers must be held to account if found responsible for the chemical attack that killed dozens of people in Douma, Syria, on 7 April. The British prime minister did not rule out joining international military action against the Syrian regime, but declined to elaborate on the options that might be available to the government



Syria gas attack: Theresa May condemns 'barbaric' targeting of civilians