Q&A: Sarin nerve agent

Image caption, The US says sarin was used in attacks on the Ghouta region last month

The United States say it has evidence that Syrian government forces used the chemical agent sarin in attacks on the outskirts of Damascus last month. 成人快手 News looks at what it is and when it has been used.

Image caption, Sarin was one of the agents used under the regime of Iraqi President Saddam Hussein