Vial that contained nerve agent that killed UK woman contained enough poison to kill thousands ABC NewsUK believes Putin personally authorised Salisbury novichok poisonings, official says The GuardianDawn Sturgess: UK inquiry into Novichok death to start Reuters UKU.K. mother killed by nerve agent was caught up in “illegal and outrageous” murder plot targeting spy, court is told CBS NewsPutin behind Novichok poisoning, ex-spy Skripal claims BBC.com