Ukrainian drone attack in southwestern Russia killed two people as parts of Ukraine went without power after Russian assaults on energy sites hours before peace talks were to restart in Germany.

Ukrainian drones hit a tanker in the southern Russian port of Rostov-on-Don, killing and injuring a number of people and sparking a fire, the city's mayor was quoted as saying early on Thursday.

Ukraine has used long-range drones to attack Russian oil platforms as it expands its strikes on the country's energy sector.

Russia unleashed a major missile and drone barrage on Ukraine overnight into Saturday, after U.S. and Ukrainian officials said they'll meet on Saturday for talks aimed at ending the war.

Russian forces launched attacks on Ukraine overnight using various types of strike drones. Thanks to the air defense systems, the majority of enemy targets were successfully destroyed, reports the Ukrainian Air Force.

Former Swedish Foreign Minister Tobias Billström said after the Ukraine war, Europe must be ready for further Russian aggression.

By The Associated Press A Ukrainian drone attack in southwestern Russia killed two people and parts of Ukraine went without power following Russian assaults on energy infrastructure, authorities