Russia has criticised the US and UK for using "unacceptable" tone and rhetoric in speeches on Syria at the UN, after being accused of "barbarism".
On Sunday, US permanent representative Samantha Power said Russian and Syrian forces were "laying waste" to rebel-held areas of the city of Aleppo.
14:04 Turkey unleashing fury of airstrikes against US-backed Syrian Kurdish forces
00:18 Russia and Syria pause in bombing of rebel-held sections of Aleppo
12:28 Syrian army and Russian jets halt Aleppo bombardment for second day
00:41 Italy resists EU push for Russia sanctions over Aleppo bombings6