Russia bombarded Ukraine’s second-largest city with massive strikes in the early hours of Saturday, its mayor said, killing at least three people, one night after Moscow carried out one of the war’s largest aerial assaults on Ukraine.

Russia launched another wave of drone and airstrikes on Ukraine early Saturday, hitting the Kharkiv region and killing at least three people, according to officials, The latest attack comes as peace talks between the two nations to end the more than three-year-long war remain in limbo.