A British couple in their 40s remains in critical condition in hospital after being poisoned by the chemical nerve agent novichok in Wiltshire, four months after Sergei and Yulia Skripal were sickened in the same way. In the wake of the Skripal’s poisoning, Yuri Felshtinsky warned “it’s only just the beginning”.

Guest: Yuri Felshtinsky, Russian-American author who co-authored the book ‘Blowing Up Russia’ with Alexander Litvinenko in 2002.