Russia and Ukraine exchanged prisoners-of-war (POWs) on Saturday, the Russian defence ministry said, and Russia handed over the bodies of 1,200 dead Ukrainian soldiers to Kyiv.The exchanges are part of agreements reached by the warring sides during talks in Istanbul earlier this month.

Ukraine alleged Monday that Russia mixed bodies of its own dead soldiers among the Ukrainian military dead that have been returned, and that more than a million Russians have been killed since conflict began.

Russia and Ukraine swapped prisoners of war on Saturday. Moscow returned 1,200 Ukrainian soldiers' bodies but claims it received no Russian war dead from Kyiv.