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.

Since then, Russia and Ukraine have swapped dozens of prisoners of war, focusing on under-25s and the severely wounded and sick. There are hopes they could build into some of the biggest exchanges in the war that was triggered by Russia's 2022 invasion of Ukraine.