In the early hours of May 15, 2026, Ukrainian defense units executed a series of coordinated attacks on significant military and infrastructure targets within Russia, according to reports from the General Staff of Ukraine.
Among the sites affected was the Ryazan Oil Refinery, located in Ryazan, Russia, where a large fire has been reported. This facility is one of the largest oil refineries in the country, with an annual processing capacity of approximately 17 million tons of crude oil. It produces gasoline, diesel, and jet fuel, which are essential for supporting Russian military operations.
Additionally, Ukrainian forces successfully struck a small missile boat and a minesweeper at the Caspian Sea naval base, as confirmed by the General Staff.
Ukrainian forces have conducted significant strikes against Russian military infrastructure, including a major oil refinery and naval assets. These actions are part of ongoing military operations aimed at disrupting Russian capabilities.