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Ukrainian Strikes Hit Russian Missile Boat, Minesweeper and Major Oil Refinery Overnight

Ukrainian Armed Forces struck Russian naval assets at the Kaspiysk base in Dagestan and hit one of Russia’s largest oil refineries in Ryazan, the General Staff of the Armed Forces of Ukraine reported on May 15.
According to the Ukrainian military, the strike on the Kaspiysk basing point damaged a Russian small missile boat and a minesweeper.
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The base is located on the Caspian Sea and is used by Russia’s naval forces for operations involving missile-capable vessels.
The same night, Ukrainian forces also struck the Ryazan oil refinery in Russia’s Ryazan region. A large fire was recorded on the territory of the facility.
The Ryazan refinery is one of Russia’s largest oil-processing plants, with an annual capacity of roughly 17 million tons of crude oil. It produces gasoline, diesel fuel, and jet fuel, including supplies used to support Russian occupation forces.
In Kaspiysk, the Ukrainian Defense Forces blew something up very nicely — reports say more than 30 Russians were wounded, and explosions continued for several hours. A ship or multiple ships were likely hit 👀 pic.twitter.com/LEUjaPSTzn
— Exilenova+ (@Exilenova_plus) May 15, 2026
Ukraine also reported strikes against several Russian military logistics and support sites in temporarily occupied territories.
In the temporarily occupied Luhansk region, Ukrainian forces hit ammunition depots near Yepifanivka and Rovenky, as well as a material and technical supply warehouse in Raihorodka.
In the temporarily occupied Donetsk region, Ukrainian strikes reportedly targeted an electronic warfare equipment depot in Dmytrivka.
According to the Ukrainian General Staff, Ukrainian forces struck a small missile boat and a minesweeper at the Russian naval base in Kaspiysk, Dagestan, during overnight strikes on May 15.
— Special Kherson Cat 🐈🇺🇦 (@bayraktar_1love) May 15, 2026
The base serves as one of the key facilities of Russia’s Caspian Flotilla. https://t.co/xdfpFteg62 pic.twitter.com/M9AnPO6r4R
The General Staff also confirmed strikes in occupied Mariupol, where Ukrainian forces hit an MR-232 Bussol-S radar station and an electro-optical module at a coastal technical reconnaissance post operated by Russia’s FSB.
A fuel and lubricants depot in occupied Mariupol was also struck.
Earlier, Operators from Ukraine’s Unmanned Systems Forces of the Armed Forces of Ukraine destroyed a Russian Be-200 amphibious aircraft and struck a Ka-27 helicopter during a drone attack on the military airfield in Yeysk.
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