What it's like to spend a winter in the trenches, according to Ukrainian soldiers

Ukrainian soldiers in the country's northeast describe winter living conditions in their trenches, in advance of a possible springtime Russian offensive.AYESHA RASCOE, HOST: In the northeastern Ukrainian region of Kharkiv, near the border with Russia, Ukrainian troops are standing out in the cold.They're preparing fortifications and trying to stay warm while bracing for a possible renewed Russian military offensive.

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