The very first drone strikes took place at 4 a.m. local time, according to Ukrainian authorities. The escalation involved Russian bombers in the air.
Within a few hours, 400–500 attack drones had been spotted in Ukrainian airspace, according to the country's air force.
Many attacks have been directed at the capital Kyiv and its surroundings, but strikes and shootings have taken place in many regions across Ukraine.
Injuries have been reported in many places. One civilian death has been reported in the Kyiv region.
