British Prime Minister David Cameron said on Friday there was limited but growing evidence that Syria had committed a war crime by using chemical weapons, Reuters reported. In a cautious assessment mirroring that of U.S. President Barack Obama's administration, Cameron said the use of chemical weapons was a red line that should trigger greater pressure on President Bashar al-Assad. "It is limited evidence but there is growing evidence that we have seen too of the use of chemical weapons, probably by the regime," Cameron told the BBC. "It is extremely serious: this is a war crime ... We need to go on gathering this evidence and also to send a very clear warning to the Syrian regime about these appalling actions," he said. -- SPA 19:12 LOCAL TIME 16:12 GMT تغريد