The Kremlin announced the swap on Tuesday, following talks between US President Donald Trump and Russian counterpart Vladimir Putin.

Moscow returned 175 Ukrainian POWs, as well as "22 seriously wounded prisoners of war in need of urgent medical assistance", while Kyiv returned 175 Russian troops, the Russian defence ministry said.

Russia said it returned the Ukrainian wounded prisoners as a "gesture of goodwill".

"All the Russian soldiers are in Belarus, where they are being provided with the necessary psychological and medical assistance and given the opportunity to contact their relatives," it added.

The two sides have swapped hundreds of prisoners since Moscow launched its Ukraine offensive in February 2022, in one of the few areas of cooperation between Moscow and Kyiv.