Ukraine says its forces have attacked a Russian submarine at a port in the Black Sea using an underwater drone. Footage released by Ukraine’s security services shows an explosion at the docks in Novorossiysk, but the Russians say no vessels were damaged. We’ll show the footage to experts to get their take on what happened.

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.

Three people, including two crew members of a cargo vessel, were killed in overnight Ukrainian drone attacks on the Russian port of Rostov-on-Don and the town of Bataysk in the southern Rostov region,

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

An oil tanker caught fire after an overnight drone attack on Russia’s southern city of Rostov, as Ukraine expands the scope of strikes on energy assets.

Russian authorities have reported a large-scale drone attack on seven regions of Russia, with disruptions to power and heating in Oryol and Rostov oblasts and a fire at the TogliattiAzot chemical plant.

Russia launched a huge attack on Ukraine overnight as the country marked Armed Forces Day on Saturday, Ukraine's air force said.