Several industrial sites in Russia were hit by a flurry of long-range Ukrainian drone strikes last night in a major attack which marks just the latest in a string of assaults on Russian soil by Ukraine’s forces. Russia’s defence ministry claimed it had managed to shoot down 50 of the drones – but intelligence sources in Kyiv told Reuters that the drones had hit three power substations and set a key fuel depot on fire. One Ukrainian source said “at least three electrical substations and a fuel storage base were hit, where fires ignited”, while videos posted on social media showed explosions and…