Ukraine's military says it cannot begin withdrawing heavy weapons from the frontlines in the country's east in accordance with a cease-fire deal because pro-Russian rebels are still carrying out attacks.
Ukraine: Rebel Attacks Halt Weapons Pullback

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Pro-Russia separatists walk after inspecting a destroyed Ukrainian army tanks for functional weapons and ammunition near the village of Lohvynove, outside Debaltseve, eastern Ukraine, Feb. 22, 2015.

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Ukrainian troops ride on armored vehicles near Artemivsk, eastern Ukraine, Feb. 23, 2015.

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A Ukrainian soldier rides a self-propelled artillery piece near Artemivsk, eastern Ukraine, Feb. 23, 2015.

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A Ukrainian multiple rocket launcher is transported towards near Artemivsk, eastern Ukraine, Feb. 23, 2015.