In this picture released on Wednesday, May 20, 2015, by the website of Islamic State militants, an Islamic State fighter fires his weapon during a battle against Syrian government forces on a road between Homs and Palmyra, Syria. Islamic State militants overran the famed archaeological site at Palmyra early on Thursday, just hours after seizing the central Syrian town, activists and officials said, raising concerns the extremists might destroy some of the priceless ruins as they have done in neighboring Iraq. (The website of Islamic State militants via AP)
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