18, according to the General Staff and a Kyiv Independent's source in Ukraine's military intelligence (HUR).The drones, operated by Ukraine's military intelligence (HUR), hit the oil depot in Tula Oblast at least 10 times in this attack, the source claimed.Tula Oblast, located south of Moscow, has regularly come under attack by Ukrainian drones as Kyiv aims at damaging Russia's oil industry, which is crucial for sustaining Moscow's war effort, as well as its military hardware.Tula Oblast Governor Dmitry Milyaev said that a fuel storage tank caught fire at "one of the enterprises in the region." No casualties were reported.Videos posted on social media and shared by residents appear to show a large fire at an oil depot in the town of Uzlovaya in the region.Ukrainian soldiers also hit an oil depot in the Russian town of Lyudinovo in Kaluga Oblast overnight, causing a fire, Ukraine's General Staff reported.Lyudinovo lies around 200 kilometers (124 miles) north of the Ukrainian border.The oil depot is owned by Kaluganefteprodukt, a subsidiary of Russia's state-controlled oil company Rosneft, according to the statement.