Russia attacked cities across Ukraine with hundreds of drones and a missile strike, hitting energy infrastructure and wounding at least 15 people.

Moscow barreled hundreds of drones toward four key regions in Ukraine overnight, just as lawmakers in Kyiv scrambled to approve additional defense spending against the backdrop of intensified Russian attacks over the past few days.

Drones that kill other drones. These machines swarm the skies in vast numbers. They're cheap, they're deadly and they're among the main reasons Ukraine believes it can hold out against advancing Russian forces this year and even beyond,