The US Secretary of State has claimed to have seen "raw data" suggesting that Assad's regime has used chlorine gas in attacks in rebel-held regions of Syria, according to Reuters. Although he also said that the data hadn't yet been fully verified.
Kerry, speaking in London, said the United States had agreed with its allies to ramp up support for the Syrian opposition but declined to say whether that would include arming them.
More top news
Cool weekend ahead but looking dry for many with sunny spells.
Firefighters have warned residents in London that an ongoing blaze could spark the explosion of a gas cylinder.
From church bells to pageants on the Thames, festivities are prepared for the moment the Queen overtakes Victoria.