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Pro-Russian separatists take position near Uglegorsk, Ukraine, on February 18.
Pro-Russian separatists take position near Uglegorsk, Ukraine, on February 18.

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    Ukrainian troops abandon key battleground city

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Ukrainian troops abandon key battleground city

In the midst of a supposed ceasefire, the important town of Debaltseve has changed hands. CNN's Nick Paton Walsh reports.

Ukrainian troops abandon key battleground city

In the midst of a supposed ceasefire, the important town of Debaltseve has changed hands. CNN's Nick Paton Walsh reports.