OPYTNE, UKRAINE - JANUARY 9: Ukrainian servicemen decorated a Christmas tree during ongoing fights between Ukrainian forces and pro-Russian rebels on January 9, 2016 in Opytne, Ukraine. All of the buildings in Opytne were damaged by artillery shellings. The 93 Ukrainian batallion holds the position on the outskirt of Donetsk international airport since October 2014. (Photo by Pierre Crom/Getty Images)
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