Some attacks "appear to have directly attacked civilians or civilian objects by striking residential areas with no evident military target and even medical facilities, resulting in deaths and injuries to civilians", Amnesty Middle East and North Africa director Philip Luther said in a statement.
"Such attacks may amount to war crimes," he said, adding that it "is crucial that suspected violations are independently and impartially investigated.”
The London-based rights group said there is "evidence suggesting that Russian authorities may have lied to cover up civilian damage to a mosque from one air strike and a field hospital in another."
There is also "evidence suggesting Russia's use of internationally banned cluster munitions and of unguided bombs in populated residential areas.”

The report focuses on attacks in Homs, Idlib and Aleppo provinces between September and November, which killed at least 200 civilians and around a dozen fighters, the group said.

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