Advertisement2 Russian Agents Carried Out Skripal Poison Attack, U.K. Says; Arrest Warrants IssuedSeptember 05, 2018Bill ChappellfacebookEmailTwo Russian men are accused of attempting to kill former KGB agent Sergei Skripal on March 4 — the same day they flew to Moscow. "We have no evidence that they re-entered the U.K. after that date," says Assistant Commissioner Neil Basu of the U.K.'s counterterrorism force. (U.K. Metropolitan Police)