Police officers stand guard at the bottom of the road where former Russian double agent Sergei Skripal lives in Salisbury, England, Tuesday, March 13, 2018. The use of Russian-developed nerve agent Novichok to poison ex-spy Sergei Skripal and his daughter makes it "highly likely" that Russia was involved, British Prime Minister Theresa May said Monday. Novichok refers to a class of nerve agents developed in the Soviet Union near the end of the Cold War. (AP Photo/Matt Dunham)

Russia Suggests UK Possessed Nerve Agent That Is “Quite Artificially” Being Linked to Moscow

Though damning conclusions were quickly drawn and accusatory fingers pointed at Moscow, many unanswered questions swirl around the poisoning: Did the U.K. itself possess the nerve agent used? If not, how did doctors quickly decide what antidotes to administer?