The late 82-year old retired chief archaeologist of the ancient Syrian city of Palmyra, Khaled al-Assaad, giving a press conference at an unknown location in Syria. The Islamic State (IS) group beheaded Al-Assaad, who refused to leave the ancient city when the jihadists captured it, on August 19, 2015, Syria's antiquities chief Maamoun Abdulkarim said. AFP/Getty Images
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