Ukrainian president Volodymyr Zelenskyy says Russia is preparing thousands of troops for a renewed assault on the country's east, as the Russian foreign minister confirms there will be no ceasefire during peace talks.

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In Mariupol, the Ukrainian government estimates tens of thousands of people are likely to have been killed in the city, which has been under attack for 47 days.

Further horrors are also being revealed around Kyiv.

As many as 50 bodies have been found on one five-mile stretch of highway west of the capital

And near Chernihiv, our team has visited a church used as a base by Russian forces, who left behind bodies showing signs of torture.

Warning: There are graphic scenes in this report.

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