Ukrainian troops fire in the air to warn off crowd

ITV News footage shows a confrontation between Ukrainian forces and local men in the eastern city of Mariupol.

The troops retreat from unarmed locals who are walking towards them shouting. The troops can then be seen repeatedly firing into the air to warn the men off.

Read: '21 dead' in 'full-scale military clash' in eastern Ukraine

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Cameron offers more Typhoons for Nato air mission

Britain will offer another two Typhoon warplanes to patrol the skies of eastern Europe amid continuing tensions with Russia over the Ukraine cris, David Cameron has said.