The UN Security Council has held an emergency session to discuss the suspected gas attack on a rebel-held town in Syria. The attack is believed to have killed more than 70 people, including children. The Syrian government has denied responsibility, while its ally Russia says the gas came from rebel weapons on the ground. But those claims have been widely rejected by western governments, as our Chief International Correspondent Lyse Doucet reports. <br /> <br /> <br />syria 'toxic attacks kill hundreds' <br />syria toxic <br />syria toxic attack <br />syria toxic bomb <br />syria toxic gas <br />syria toxic gas attack <br />syria toxic gas video <br />syria toxic gas youtube <br />syria toxic waste <br />toxic attack in syria <br />toxic bomb in syria <br />toxic chemicals in syria <br />toxic gas attack in syria <br />toxic gas in syria <br />toxic in syria <br />toxic junction syria <br />toxic massacre in syria <br />toxic weapons in syria <br />toxic weapons syria
