AdvertisementBritish Police Say Nerve Agent Was Used To Poison Russian Ex-Spy Sergei SkripalMarch 07, 2018Scott NeumanfacebookEmailAssistant Commissioner Mark Rowley gives a statement on Wednesday in Salisbury, England. Sergei Skripal, who was granted refuge in the U.K. following a prisoner swap between the U.S. and Russia in 2010, and his daughter remain critically ill after being exposed to an unknown substance now believed to have been a nerve agent. (Getty Images)