Ukrainian servicemen ride on top of an armored personnel carrier on the way from Artemivsk to Debaltseve on Feb. 17, 2015. (Anatolii Stepanov, AFP/Getty Images)
An unexploded missile is embedded in a street in the eastern Ukrainian city of Kramatorsk on Feb. 10. (Volodymyr Shuvayev / AFP/Getty Images)
Firefighters try to save a clinic after shelling in the eastern Ukrainian city of Artemivsk on Saturday. (Sergey Bobok/ AFP/Getty Images)
Russia-backed separatists carry a coffin with their comrade during a funeral at a cemetery in the east Ukrainian village of Mospino, near the city of Donetsk. (Petr David Josek / AP)
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German Chancellor Angela Merkel and French President Francois Hollande arrive for a briefing in Minsk on Feb. 12, 2015. (Kirill Kudryavtsev, AFP/Getty Images)
Unmarked graves are seen at a cemetery in the east Ukrainian village of Mospino, near the city of Donetsk, Ukraine. (Petr David Josek / AP)
People board a bus to leave the town of Debaltseve, Ukraine. (Petr David Josek / AP)
An Ukrainian policeman embraces his wife during a ceremony in Kharkiv, northeastern Ukrainian, on January 30, 2015, before his departure to the east of the country where they will take part in “Anti-Terrorist Operation” (ATO). (Sergey Bobok / AFP/Getty Images)
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Ukrainian servicemen stay on their position at the checkpoint under the bridge of Peski village near of Donetsk, Ukraine. (Anastasia Vlasova / EPA)
A female Ukrainian serviceman holds a dog at the checkpoint under the bridge of Peski village near of Donetsk, Ukraine (Anastasia Vlasova / EPA)
Ukrainian politician Viktor Medvedchuk, who represents Kiev at the negotiations, leaves the presidential residence after talks in Minsk, Belarus. (Tatyana Zenkovich / EPA)
A body of a civilian killed in shelling is covered by a blanket in Donetsk, eastern Ukraine. (Vadim Braydov / AP)
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People set candles on Independence Square in Kiev on Jan. 24, 2015 in memory of people who died during shelling in the southern Ukrainian city of Mariupol. (Anatolii Stepanov, AFP/Getty Images)
People sing the Ukrainian national anthem next to candles set to form the word “Mariupol” on Independence Square in Kiev on Jan. 24, 2015 in memory of people who died during shelling. (Anatolii Stepanov, AFP/Getty Images)
People lay flowers and set candles on Jan. 24, 2015, during a rally at a bus stop in Donetsk, eastern Ukraine, where 13 people were killed in a trolleybus shelling on January 22. (Alexander Gayuk, AFP/Getty Images)
Ukrainian servicemen ride an APC at the frontline in the village of Orlovka, near the city of Donetsk, on Jan. 23, 2015. (Oleksandr Stashevskiy, AFP/Getty Images)
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Ukrainian prisoners of war arrive Dec. 26, 2014, for a prisoner exchange between pro-Russia rebels and Ukrainian troops, about 15 miles from Donetsk, Ukraine. (Alexander Ermochenko / EPA)
A Ukrainian service member walks past destroyed military equipment near the village of Talakovka, northeast of Mariupol, on Sept. 7 after an overnight bombing. (Anatolii Boiko, AFP/Getty Images)
A cross stands at an abandoned Ukranian military position after fighting with pro-Russian separatists outside the village of Mnogopolye, southeast from Donetsk September 5. A ceasefire between Ukrainian forces and pro-Russian separatists in eastern Ukraine appeared to be holding that evening. (Maxim Shemetov / Reuters)
A woman reacts after explaining that her house was damaged during fighting between pro-Russian separatists and Ukrainian forces in the village of Chervonoselskoye, southeast from Donetsk, September 5. A ceasefire between Ukrainian forces and pro-Russian separatists in eastern Ukraine appeared to be holding that evening. (Maxim Shemetov / Reuters)
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A Ukrainian servicemember from the Kiev-1 Battalion holds a found portable anti-tank guided missile launcher on Sept. 2 in the southeastern Ukrainian town of Slavyansk. (Sergei Bobok, AFP/Getty Images)
Ukrainian loyalist fighters from the Azov Battalion stand guard on a hill on the outskirts of Mariupol on Aug. 30. (Francisco Leong, AFP/Getty Images)
Prisoners of war, who are Ukrainian servicemen captured by pro-Russian separatists, clean a street in the Donetsk region, August 29. (Maxim Shemetov / Reuters)
A Pro-Russian separatist inspects a gun at a destroyed war memorial at Savur-Mohyla, a hill east of the city of Donetsk, August 28. (Maxim Shemetov / Reuters )
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Pro-Russian separatists walk towards a destroyed war memorial at Savur-Mohyla, a hill east of the city of Donetsk, August 28. (Maxim Shemetov / Reuters)
A combination satellite image taken by DigitalGlobe on June 19, 2014 and August 20, 2014 shows what is reported to be a military deployment site on the Russian side of the border, near Rostov-on-Don. (Reuters / DigitalGlobe via SHAPE)
A pro-Russian separatist walks past a car which was damaged by what locals say was recent shelling by Ukrainian forces in Donetsk (Maxim Shemetov / Reuters)
Train wagons are seen on the destroyed railway bridge which collapsed during the fighting between the Ukrainian army and pro-Russian separatists over a main road leading to the eastern Ukrainian city of Donetsk. (Gleb Garanich / Reuters )
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Train wagons are seen on the destroyed railway bridge which collapsed during the fighting between the Ukrainian army and pro-Russian separatists over a main road leading to the eastern Ukrainian city of Donetsk. (Gleb Garanich / Reuters)
Workers try to repair the gate of a bakery damaged during a shelling in the Kievski neighborhood in northern Donetsk. (FRANCISCO LEONG / AFP/Getty Images)
A girl holds a placard during the rally in front of Ukrainian Defence Ministery in Kiev. (SERGEI SUPINSKY / AFP/Getty Images)
People hold placards during a rally in front of the Ukrainian Defence Ministry in Kiev. (SERGEI SUPINSKY / AFP/Getty Images)
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A firefighter walks among charred debris in a school which was engulfed in flames during what locals say was recent shelling by Ukrainian forces in Donetsk. (Maxim Shemetov / Reuters)
A group of Russian servicemen who were detained by Ukrainian authorities attend a news conference in Kiev. Ukraine said its forces had captured a group of Russian paratroopers in Ukrainian territory on a “special mission” - Moscow said they had ended up there by mistake. (Valentyn Ogirenko / Reuters)
A woman prepares food in the Ukrainian city of Avdeevka near Donetsk. Fighting between the Ukrainian army and pro-Russian separatists have rendered the city without electricity and gas. (Gleb Garanich / Reuters)
A local resident holds a Russian national flag as part of a Russian humanitarian convoy cross the Ukrainian border at the Izvarino custom control checkpoint. (AFP/Getty Images)
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Ukrainian servicemen detain a pro-Russian activist at a checkpoint near the eastern Ukrainian town of Debaltseve, August 16. (Valentyn Ogirenko / Reuters)
Russian military vehicles loaded with shipping containers for missiles of BUK-M1 air defense missile system drive along the road outside Kamensk-Shakhtinsky, Rostov Region, August 16. (Maxim Shemetov / Reuters)
People hold Russian flags and flags of the self-proclaimed “People’s Republics of Donbass” in eastern Ukraine as they take part in a rally in support of pro-Russian separatists in Moscow. (VASILY MAXIMOV / AFP/Getty Images)
Refugees from Donetsk and Lugansk regions unload the humanitarian aid distributed by the UN mission in Yalta. (ALEXANDER KHUDOTEPLY / AFP/Getty Images)
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Women with their children, refugees from Donetsk and Lugansk regions, line up to receive humanitarian aid from the UN mission in Yalta. (ALEXANDER KHUDOTEPLY / AFP/Getty Images)
Men in military dress hold an icon of the Mother of God during a rally in support of the self-proclaimed “People’s Republics of Donbass and Luhansk”, in Moscow. (VASILY MAXIMOV / AFP/Getty Images)
A Ukrainian serviceman sleeps at a checkpoint near the eastern Ukrainian city of Debaltseve in the Lugansk region. (GENYA SAVILOV / AFP/Getty Images)
Ukrainian troops guard a checkpoint near the eastern Ukrainian city of Debaltseve in the Lugansk region. (GENYA SAVILOV / AFP/Getty Images)
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People cross a damaged bridge in their car on near the village of Debaltseve, in the Donetsk region, eastern Ukraine. (GENYA SAVILOV / AFP/Getty Images)
A Ukrainian serviceman guards a checkpoint near the eastern Ukrainian city of Debaltseve in the Lugansk region. (GENYA SAVILOV / AFP/Getty Images)
A Ukrainian serviceman patrols as deminers neutralize mines and other explosives in the village of Semenovka, near the eastern Ukrainian city of Slavyansk in the Donetsk region on July 14. (Genya Savilov, AFP/Getty Images)
A Ukrainian forces serviceman guards their position at the check-point near Slavyansk. (GENYA SAVILOV / AFP/Getty Images)
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A Ukrainian forces serviceman reads a newspaper at the check-point near Slavyansk. (GENYA SAVILOV / AFP/Getty Images)
A driver of a car examines the engine with the hood pierced by shrapnel at a Ukrainian forces check-point near Slavyansk. (GENYA SAVILOV / AFP/Getty Images)
