EDITORS NOTE: Graphic content / Andrey Karlov (front), the Russian ambassador to Ankara, lies on the floor next to his killer who still point his gun to people attending an art exhibition in Ankara, on December 19, 2016. A gunman crying "Aleppo" and "revenge" shot Karlov while he was visiting an art exhibition in Ankara on December 19, witnesses and media reports said. The Turkish state-run Anadolu news agency said the gunman had been "neutralised" in a police operation, without giving further details. / AFP PHOTO / STRINGER