Russia's says a UN human rights report criticising pro-Russian separatists in eastern Ukraine was "hypocritical".
The paper on fighting in the region argued that "a reign of fear and terror" had been inflicted on the people by armed militia backed by Russia.
It suggested rebels were using torture and detention to "exercise their power over the population in raw and brutal ways".
Russia's Foreign Ministry described the report as "unobjective and even hypocritical", adding that it failed to mention the detentions of Russian journalists in eastern Ukraine and the reported use of heavy rockets by the Ukrainian army against civilians.
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