Ukrainian government forces and pro-Russian separatists said they would not carry out an agreement to pull back heavy guns in east Ukraine on Tuesday, pushing a shaky peace deal closer to collapse.
Ukraine, Rebels Continue Fight for Debaltseve - Feb. 17, 2015

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Fighters from the separatist-controlled Donetsk region smoke near an armored personnel carrier in the village of Nikishine, southeast of Debaltseve, Feb. 17, 2015.

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Fighting damaged buildings in the village of Nikishine, southeast of Debaltseve, Ukraine, Feb. 17, 2015.

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A man looks at pictures of victims of the Maidan Square protests, which happened nearly one year ago, from February 20-22, placed as a commemoration in Kyiv, Ukraine, Feb. 17, 2015.

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Map of Debaltseve, Ukraine