Novichok are a set of molecules that are some of the most deadly nerve agents ever developed. They are almost impossible to detect and clean up.
The same deadly nerve agent used against a former Russian spy and his daughter could be linked to a second poisoning that killed a 44 year old woman in the UK.
Former Russian spies Alexander Litvinenko and Sergei Skripal were both poisoned – one polonium, the other by Novichok. Now that there's been another nerve agent case, what's the difference?
The spectacle of thousands of soldiers gassed to death in France announced to the world that a new class of weapons had arrived.
An audio version of an in depth article on the story of how the nerve agent used in an attack on former Russian spy Sergei Skripal was developed.
A long read on how nerve agents were developed – and used in an attack on a former Russian spy on the streets of Salisbury.
International law on chemical weapons fails without mutual trust and transparency.
Hundreds of people have been warned after former Russian spy Sergei Skripal was poisoned with Novichok nerve agent.
Even if they do eventually wake up, Sergei and Julia Skripal could suffer permanent damage as a result of their exposure to a Novichok nerve agent.