Russia has vowed to retaliate after it says Ukrainian strikes have killed 14, including two children, in the border city of Belgorod.

If confirmed, it would be one of the deadliest strikes on Russia during the war so far – after nearly two years of fighting.

It comes hours after Russian strikes on a number of cities across Ukraine which killed 39 people, in what was described by Kyiv as Russia’s biggest missile bombardment of the war so far.

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