Ukraine says talks in Turkey with Russia fail to make progress towards ceasefire

Ukrainian officials say 1,207 bodies have been collected from the streets there in recent days. Workers are burying the dead in mass graves.

Bombs fell on two hospitals in a city west of Kyiv on Wednesday, its mayor said. The World Health Organization said it has confirmed 18 attacks on medical facilities since the invasion began.

Western officials said Russian forces have made little progress on the ground in recent days, but they have intensified the bombardment of target cities.

Kuleba called for Russia to allow the evacuation of civilians from Mariupol. He said Ukraine was ready for diplomacy but also able to defend itself as it appeared that Russia would fight on and was seeking a surrender from Kyiv that it was not prepared to offer.

The Kremlin has said it would stop the war if Ukraine ceased military action, enshrined in its constitution that it had no plans to join Nato, gave up annexed Crimea and recognised the separatist regions of Donetsk and Luhansk as independent states.

The British government is also imposing asset freezes on Putin ally Igor Sechin, the owner of Russian state oil company Rosneft, and Oleg Deripaska, an aluminium magnate believed by the Foreign Office to be worth £2bn.