KHARKIV, Ukraine—A Russian drone attack struck residential buildings in the Ukrainian city of Kharkiv and an energy facility in the surrounding region on Thursday, killing four people and severing power for 350,000 residents, officials said.
Ukraine’s second-largest city, which lies some 30 km (20 miles) from the Russian border, has been bombed heavily during the 25-month war and been one of the worst afflicted as Russia has renewed its missile and drone attacks on the energy system.