The attack, just hours after President Trump gave the Kremlin a new deadline to work toward ending the war, was part of a wave across the country, the authorities said.

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.

MOSCOW (Reuters) -A Russian factory, described by its director as the world's biggest maker of strike drones, has been shown on the Russian army's TV channel with teenagers helping make kamikaze drones to attack Ukraine.