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

The Russian submarine was allegedly carrying Kalibr cruise missiles, which Russia has used in devastating strikes on critical infrastructure and military targets across Ukraine. The SBU said the submarine was “put out of action” as a result of the blast. The FT could not independently verify the claim.

A Ukrainian drone attack in southwestern Russia killed two people and parts of Ukraine went without power following Russian assaults on energy infrastructure, authorities said Saturday, as

The drones are still in limited supply and are not always the ideal interception method, Ukrainian soldiers and an official told Business Insider.