UN rights body says there is spike in casualties in past three months as millions face daily abuse in rebel-held areas.
Russia's War Against Ukraine
Al Jazeera: Nearly 8,000 killed since conflict broke out in Ukraine
Armed pro-Russian rebels of the self-proclaimed Donetsk People's Republic take part in a rally at Saur Mogyla Memorial on Sept. 7, 2015, to mark the anniversary of the releasing of Donetsk Oblast from occupation during WWII.
