Ukrainian President Volodymyr Zelensky has made an unannounced visit to the frontline city of Bakhmut, where Ukrainian and Russian forces have fought a fierce, months-long battle.

He met troops and handed out awards to soldiers, the presidency said.

For months, Bakhmut has been a key target for Russian forces in the Donetsk region, and has been extremely badly damaged.

However, Ukrainian forces have been able to hold back the advance.

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