Marina Davydova Karlova (C), the widow of slain Russian ambassador to Turkey, Andrei Karlov, kisses her husband during a religious service for killed Russian ambassador to Turkey, Andrei Karlov inside the Christ the Saviour Cathedral in Moscow, Russia, Thursday, Dec. 22, 2016. Karlov was shot dead by a Turkish policeman Monday in Ankara, Turkey.(Xinhua/Bai Xueqi)
