Backed by Russian airstrikes, pro-Syrian forces reclaimed control of the ancient city of Palmyra after a 10-month Islamic State occupation that included the destruction of several monuments dating back nearly 2,000 years.
Ancient City of Palmyra, Syria

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In this photo released by the Syrian official news agency SANA, a Syrian soldier holds a Syrian national flag in front of the Palmyra citadel, March 27, 2016.

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FILE - This file photo released on Sunday, May 17, 2015, by the Syrian official news agency SANA, shows the general view of the ancient Roman city of Palmyra, northeast of Damascus, Syria.

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In this photo released on March 24, 2016, by the Syrian official news agency SANA, Syrian government soldiers gather outside a damaged palace, in Palmyra, central Syria.