Fighting raged Aug. 10 in the eastern Ukrainian city of Donetsk despite a request from the pro-Russian rebels for a cease-fire to prevent a "humanitarian catastrophe." Ukrainian officials demanded that the insurgents surrender instead.
Russia's War Against Ukraine
CBS News: Pressing advantage, Ukraine demands rebels surrender
Ukrainian border guards walk inside their barracks following the overnight attack of the frontier guard station in Milove, Lugansk oblast on Aug. 8, 2014
