Ukraine’s Defense Forces hit several major Russian military and energy targets overnight and into Thursday, May 15, including the Ryazan oil refinery, Russian warships, ammunition depots, and radar systems, Ukraine’s General Staff said.
According to the statement, Ukrainian forces hit the Ryazan oil refinery in Russia’s Ryazan region, causing a large fire at the facility.
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The refinery is one of Russia’s largest oil-processing plants, with an annual processing capacity of around 17 million tons of oil.
“The plant produces gasoline, diesel fuel, and jet fuel used to meet the needs of the Russian occupation forces,” the General Staff said.
Ukrainian forces hit Russian warships and depots
The General Staff also said Ukrainian forces hit a small missile ship and a minesweeper at the Russian naval base in Kaspiysk.
In the occupied Luhansk region, Ukrainian attacks targeted Russian ammunition depots near Yepifanivka and Rovenky.
Additional attacks reportedly hit a logistics warehouse in Raihorodka and a Russian electronic warfare equipment depot in Dmytrivka in the occupied Donetsk region.
Radar systems, fuel depots hit in Mariupol
According to the General Staff, Ukrainian forces also targeted and decommissioned an FSB coastal technical reconnaissance post in occupied Mariupol.
The attack reportedly damaged an MR-232 Bussol-S radar station and an optical-electronic module.
Ukrainian forces additionally hit a Russian fuel and lubricants depot in Mariupol, the statement said.
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Overnight on Friday, a large-scale drone attack ignited a major fire at the Ryazan Oil Refinery, one of Russia’s largest fuel production facilities, according to local residents and Russian monitoring channels.
Multiple loud explosions were reported after several drones were seen flying over the city. Videos shared online appeared to show flames and thick smoke rising from the refinery.
Ryazan Governor Pavel Malkov claimed that local air defense and electronic warfare units intercepted the incoming drones, but said falling debris caused a fire on the premises of an industrial enterprise.
The Rosneft-operated Ryazan facility, located roughly 460 kilometers (286 miles) from the Ukrainian border, processes up to 17.1 million tons of crude oil annually and is considered a key site for Russia’s fuel supply.
The attack coincided with drone alerts and intercepts near Moscow, prompting temporary flight restrictions at Domodedovo and Sheremetyevo airports.