“This is you who decided this is not us,” replied Mr Kelin, “So keep it to yourself if you like to.”
The host fired back: “Well, I am sure the British state would love to the person we feel was responsible for the killing of someone on British soil to justice.
“But we are incapable of doing that.”
On March 4 2018 Sergei and Yulia Skripal were poisoned with the nerve agent Novichok but survived after weeks of intensive care.
The British Government accused the Russian state of attempted murder and expelled a number of Russian diplomats in retaliation.