In response to the Ukrainian army's devastating strike in Makiivka, Russia claims to have killed more than 600 Ukrainian soldiers in a missile attack in Kramatorsk, Donbass, on Sunday.

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In a video released by the Russian Defense Ministry, spokesman Igor Konashenkov advanced the heavy losses suffered by the Ukrainians, confirms Reuters.

If the facts are confirmed, it would be one of the deadliest blows inflicted on the Ukrainian forces.

More details to come.