 Although sceptical , Harry sends Lucas to Kachimov to learn which cable the submarine will attack so Malcolm can launch a counterattack . Lucas is able to turn Kachimov by forging evidence that he is an MI5 mole . They both go to the Russian embassy and find the submarine 's location , after which Malcolm launches the counterattack with seconds to spare . Kachimov is later arrested . Lucas visits Elizabeta at her home , which was also their married home and he asks her to become an asset to MI5 to save her from arrest because of her association with Kachimov . In the end , Kachimov is with Harry and Ros in a field . Kachimov states his admiration for Adam 's sacrifice , but then callously says he was a replaceable resource . In the final moments , Ros hands Harry a gun and Harry kills Kachimov with a shot to the chest . 
