Ukraine and Russia exchanged another group of ill and severely wounded servicemen on Thursday, officials from both countries said. All of the Ukrainian troops need treatment, Ukraine's President Volodymyr Zelenskiy said in a message on the Telegram messaging app that did not go into details on the numbers involved.

Ukraine said it has repatriated 1,200 more bodies of Ukrainians killed in the war sparked by Russia's full-scale invasion more than three years ago, the latest move in a series of prisoner exchanges negotiated between the two sides.

Ukrainian officials say Ukraine has repatriated another 1,200 bodies in line with an agreement reached during peace talks in Istanbul between Russian and Ukrainian delegations