At least 200 civilians have been killed in Russian air strikes in Syria.
Moscow has repeatedly denied causing civilian deaths, describing such claims as part of “information warfare”.
Russia began air strikes targeting Islamic State militants (IS) and other groups on 30 September, saying it was acting at the request of Syrian President Bashar al-Assad.
Moscow has also been accused of bombing rebel groups opposed to Mr Assad but backed by the West. Russia’s air campaign comes as a US-led coalition continues its own air strikes against IS targets in Syria.