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Open Image ModalCadets of a Ukrainian military academy crawl under barbed wire as part of exercises near the southern Ukrainian city of Odessa on Aug. 16, 2014. (ALEXEY KRAVTSOV/AFP/Getty Images) (credit:ALEXEY KRAVTSOV via Getty Images)
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Open Image ModalUkrainian soldiers charge a Grad multiple rocket launcher system near the eastern Ukrainian city of Shchastya in the Lugansk region on Aug. 18, 2014. (ALEKSEY CHERNYSHEV/AFP/Getty Images) (credit:ALEKSEY CHERNYSHEV via Getty Images)
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Open Image ModalOn Aug. 16, 2014, a man shows his neighbor's apartment after it was burned down from a reported missile strike in the residential area of Lysychansk, Ukraine during fighting between the Ukrainian army and pro-Russian rebels. (AP Photo/Vitnija Saldava) (credit:ASSOCIATED PRESS)
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Open Image ModalOn Aug. 16, 2014, a pile of rubble stands in front of a multi-story building in the residential area of Lysychansk, Ukraine after a reported missile strike during fighting between the Ukrainian army and pro-Russian rebels. (AP Photo/Vitnija Saldava) (credit:ASSOCIATED PRESS)
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Open Image ModalSigns of explosions are visible during combat between Ukrainian forces and pro-Russian militants in Yasynuvata, a suburb of the eastern Ukrainian city of Donetsk, on Aug. 19, 2014. (ANATOLII STEPANOV/AFP/Getty Images) (credit:ANATOLII STEPANOV via Getty Images)
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Open Image ModalOn Aug. 17, 2014 in Kiev, Ukraine, friends and relatives say goodbye to military volunteers being sent to the eastern part of the country to join the ranks of the "Azov" special battalion fighting against pro-Russian separatists. (AP Photo/Efrem Lukatsky) (credit:ASSOCIATED PRESS)
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Open Image ModalIn Kiev, Ukraine on Aug. 17, 2014, volunteers take an oath of allegiance to Ukraine before being sent to the eastern part of the country to join the ranks of the "Azov" special battalion fighting against pro-Russian separatists. (AP Photo/Efrem Lukatsky) (credit:ASSOCIATED PRESS)
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Open Image ModalOn Aug. 16, 2014, passengers look through a bus window at a destroyed car after shelling in Donetsk, eastern Ukraine. (AP Photo/Max Vetrov) (credit:ASSOCIATED PRESS)
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Open Image ModalThe drawing of an eight-year old Ukrainian boy, depicting Russian President Vladimir Putin and an Ukrainian tank, is displayed on a billboard in the western Ukrainian city of Lviv on Aug. 20, 2014. (YURKO DYACHYSHYN/AFP/Getty Images) (credit:YURKO DYACHYSHYN via Getty Images)
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Open Image ModalA Russian military truck carries an MSTA-S self-propelled howitzer from the Russia-Ukrainian border control point in Donetsk on Aug. 19, 2014. (AP Photo/Pavel Golovkin) (credit:ASSOCIATED PRESS)
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Open Image ModalA column of Ukrainian paratroopers stops for a rest in Druzhkivka, part of the country's eastern Donetsk region, on Aug. 19, 2014. (ANATOLII STEPANOV/AFP/Getty Images) (credit:ANATOLII STEPANOV via Getty Images)
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Open Image ModalSoldiers eat ice cream as a column of Ukrainian paratroopers stops for a rest in Druzhkivka, part of the Donetsk region, on Aug. 19, 2014. (ANATOLII STEPANOV/AFP/Getty Images) (credit:ANATOLII STEPANOV via Getty Images)
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Open Image ModalA Ukrainian MI-24 helicopter flies near the eastern city of Kramatorsk on Aug. 19, 2014. (ANATOLII STEPANOV/AFP/Getty Images) (credit:ANATOLII STEPANOV via Getty Images)
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Open Image ModalPeople hide in a bomb shelter in an orphanage during reported shelling of Makiyivka, Ukraine on Aug. 19, 2014. (DIMITAR DILKOFF/AFP/Getty Images) (credit:DIMITAR DILKOFF via Getty Images)
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Open Image ModalChildren and educators hide in a bomb shelter in an orphanage during reported shelling of Makiyivka, Ukrane on August 19, 2014. (DIMITAR DILKOFF/AFP/Getty Images) (credit:DIMITAR DILKOFF via Getty Images)
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Open Image ModalUkrainian soldiers walk in a trench as they guard their position near the eastern Ukrainian city of Shchastya on Aug. 18, 2014. (ALEKSEY CHERNYSHEV/AFP/Getty Images) (credit:ALEKSEY CHERNYSHEV via Getty Images)
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Open Image ModalA member of the Donbass battalion, a volunteer militia group devoted to ensuring a united Ukraine, cleans his Kalashnikov machine gun on Aug. 18, 2014 in the eastern city of Popasna. (ANATOLII STEPANOV/AFP/Getty Images) (credit:ANATOLII STEPANOV via Getty Images)
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Open Image ModalA Ukrainian soldier gestures as he talks with children on Aug. 18, 2014 in the eastern city of Popasna. (ANATOLII STEPANOV/AFP/Getty Images) (credit:ANATOLII STEPANOV via Getty Images)
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Open Image ModalRussian soldiers talk to each other on the top of a tank outside Donetsk on Aug. 18, 2014. (DMITRY SEREBRYAKOV/AFP/Getty Images) (credit:DMITRY SEREBRYAKOV via Getty Images)
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Open Image ModalDrivers of a Russian humanitarian convoy wait at a checkpoint at the Ukrainian border outside the town of Kamensk-Shakhtinsky in the Rostov region of Russia on Aug. 17, 2014. (DMITRY SEREBRYAKOV/AFP/Getty Images) (credit:DMITRY SEREBRYAKOV via Getty Images)
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Open Image ModalFiremen stand amongst burnt houses after reported shelling in Donetsk on Aug. 16, 2014. (DIMITAR DILKOFF/AFP/Getty Images) (credit:DIMITAR DILKOFF via Getty Images)
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Open Image ModalA pro-Russia militant stands guard on a road near Donetsk, Ukraine on Aug. 18, 2014. (DIMITAR DILKOFF/AFP/Getty Images) (credit:DIMITAR DILKOFF via Getty Images)
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Open Image ModalArmed soldiers of the Ukrainian special forces stand during a military operation near Debaltseve, in the Donetsk region, on Aug. 16, 2014. (ANATOLII STEPANOV/AFP/Getty Images) (credit:ANATOLII STEPANOV via Getty Images)
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Open Image ModalA Ukrainian serviceman crawls behind a car during a shooting near the checkpoint of Debaltseve, in the region of Donetsk, on Aug. 16, 2014. (ANATOLII STEPANOV/AFP/Getty Images) (credit:ANATOLII STEPANOV via Getty Images)