The U.K. has new evidence of chemical weapon use in Damascus, British Prime Minister David Cameron told the BBC on Thursday. Speaking at the G-20 Summit in St. Petersburg, Cameron said that scientists have examined samples and confirmed traces of sarin gas were found on cloth and soil samples.
The new evidence will be used by the British prime minister to try to persuade Russian president Vladimir Putin to force Syrian president Bashar al-Assad to negotiate, the Guardian reports. "All the testing that's been done, including the testing we are doing at our Porton Down laboratories, all adds to the picture. But I don't think anyone is seriously denying that a chemical weapons attack took place. I think the Russians accept that. Even the Iranians accept that,” Cameron told the Guardian. "The question is obviously convincing more people that the regime was responsible."