Firefighters respond after a building was damaged following a Russian attack in Kyiv on December 29.
Mandatory Credit:	Ukrainian Emergency Service/AP

Firefighters respond after a building was damaged following a Russian attack in Kyiv on December 29.
Mandatory Credit: Ukrainian Emergency Service/AP

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Russia unleashes biggest air attack on Ukraine since start of full-scale invasion

Russia has launched the biggest air attack on Ukraine since the beginning of its full-scale invasion, the Ukrainian military told CNN, with an unprecedented number of drones and missiles fired at targets across the country, killing at least 31 people and injuring more than 150 others.