Chemical weapons have been used in war for more than a century. Even today Syria's Bashar al-Assad is accused of using Sarin gas on his own people. And just weeks ago, two Russians were poisoned by a nerve agent in the British town of Salisbury, leaving them close to death. How much of a threat do these weapons pose to our everyday lives? Can authorities stop the use of these deadly weapons and make sure they don't fall into the wrong hands?' How much of a threat do these weapons pose to our everyday lives? Can authorities stop the use of these deadly weapons and make sure they don't fall into the wrong hands? At the Roundtable was Richard Guthrie, a chemical weapons expert and founder of CBW events, which aims to document the use of chemical weapons to inform policy making; and journalist Mark Seddon. Roundtable is a discussion programme with an edge. Broadcast out of London and presented by David Foster, it's about bringing people to the table, listening to every opinion, and analysing every point of view. From fierce debate to reflective thinking, Roundtable discussions offer a different perspective on the issues that matter to you. Watch it every weekday at 15:30 GMT on TRT World.