The strategic port city of Mariupol in south Ukraine appears to be on the brink of falling to Russian forces.

Russia says more than 1,000 Ukrainian marines have surrendered in the besieged city, although the authorities there have denied this.

However Mariupol’s defenders have said that many of their soldiers are dead and the remaining troops are very short of ammunition.

The city has been surrounded for weeks by Russian forces and Ukraine’s government says it believes tens of thousands of civilians have died there.

Clive Myrie in Kyiv presents BBC News at Ten reporting by Tom Bateman in south-east Ukraine.

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