New BBC drama The Salisbury Poisonings has raised a lot of questions.
For instance how did Ross Cassidy and Sergei Skripal become friends and are they still in contact now?
Here’s everything you need to know…
Ross Cassidy and Sergei Skripal’s friendship explained
Ross Cassidy was Sergei Skripal’s neighbour when the former Russian spy first moved to Salisbury.
The pair struck up a friendship pretty much instantly and were close pals for ten years before the attack.
He became aware of Sergei’s involvement with the Russian government after Googling him.
Read more: Is Sergei Skripal still alive and what happened to his daughter?
During an interview with the Sunday Times, Ross admitted he was shocked that Sergei was not given a new identity after the Alexander Litvinenko poisoning in 2006.
He told the paper: “”
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