FILE - In this Sept. 27, 2002, file photo, a symbolic trade caravan representing the prosperous trade during the era of Queen Zanobya 260-273AD attend a show held in the ancient city of Palmyra, some 240 kilometers (150 miles) northeast of Damascus, Syria. Islamic State militants beheaded 81-year-old Khaled al-Asaad, a leading Syrian antiquities scholar who spent most of his life looking after the ancient ruins of Palmyra, then hung his body from a pole in a main square of the historic town, Syrian activists and the scholar's relatives said Wednesday, Aug. 19, 2015. (AP Photo/Bassem Tellawi, File)
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