In this audio version of an in depth article from The Conversation, listen to the story of how nerve agents were developed – and used in an attack on a former Russian spy on the streets of the English city of Salisbury.
You can read the text version of this article here. It’s read by Annabel Bligh for The Conversation’s In Depth Out Loud podcast.
The music in this podcast is Night Caves, by Lee Rosevere from the Free Music Archive. A big thanks to City University London’s Department of Journalism for letting us use their studios to record.