Russia launched a massive attack on Ukraine overnight into Saturday with hundreds of drones, killing at least one person, part of a stepped-up bombing campaign that has dashed hopes for a breakthrough in efforts to end the more than 3-year-old war.

KYIV (Reuters) -Ukrainian President Volodymyr Zelenskiy said on Saturday that Russia launched over 30 missiles and 300 drones in an overnight attack. The attack damaged critical infrastructure in Sumy, where several thousand families suffered power cuts, he added in a statement on the Telegram messaging app.

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