A Ukrainian serviceman climbs out of a tank at a checkpoint near Horlivka, Ukraine, on Monday, February 23. Fighting between Ukrainian troops and pro-Russian rebels in the country has left more than 5,000 people dead since mid-April, according to the United Nations.
A member of a Ukrainian military medical unit cries during a ceremony in Artemivsk, Ukraine, on February 23. Four of his comrades were killed near Debaltseve, Ukraine.
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