Refugee agencies are warning that millions of Ukrainians could be on the move, fleeing to neighbouring countries to escape the Russian invasion.

Many thousands have already reached the border, with chaotic scenes as people try to cross to safety.

Most are heading for Poland where reception centres have been set up at the border.

Martine Croxall presents News at Ten reporting by Fergal Keane in west Ukraine, Mark Lowen on the Polish border and Lucy Williamson in Moldova.

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