An al-Qaeda linked terror group has claimed responsibility for the assassination of the Russian ambassador in Turkey, it was reported. A statement released by the Syria based al-Nusra front hails the killer, off duty policeman Mevlut Altintas, as a martyr who sought 'revenge for the women, children and elderly killed in Aleppo'. Altintas recited a poem associated with al-Nusra fighters and yelled, 'Don't forget Aleppo', before gunning down Andrei Karlov at the opening of an art exhibition in Ankara.