At least two people have been killed and another 17 injured in the biggest Russian drone attack on Ukraine's second-largest city of Kharkiv, the mayor says. Ihor Terekhov says that overnight Russia launched 48 drones, as well as two missiles and four gliding bombs.

Russia struck Ukraine with a thunderous aerial bombardment overnight, further dampening hopes that the warring sides could reach a peace deal anytime soon days after Kyiv embarrassed the Kremlin with a surprising drone attack on military airfields deep inside Russia.

A stunning attack in Russia highlights how small drones can be outfitted with new software and components to turn them into killing machines.