Poisoned ex-spy: Why does UK think it was Russia?To play this video you need to enable JavaScript in your browser.This video can not be playedPoisoned ex-spy: Why does UK think it was Russia?CloseThe BBC's Gordon Corera considers the attack on Sergei Skripal and his daughter in Salisbury.SubsectionEuropePublished16 March 2018Shareclose panelShare pageCopy linkAbout sharingRead description