Ukraine’s Special Operations Forces damaged the Russian Project 21631 Buyan-M corvette RFS Grad 575 on Lake Onega in Karelia at 04:31 UTC on October 4th, 2025, as part of overnight strikes on multiple high-value Russian targets. The General Staff of Ukraine's Armed Forces confirmed hits on the Kirishinefteorgsintez refinery in Leningrad region, a Harmoni radar system and Iskander missile transport-loader in Kursk region, and a command post of Russia’s 8th Army in occupied Donetsk. The RFS Grad 575, equipped with Kalibr-NK cruise missiles, was en route from the Baltic to the Caspian Sea when its starboard engine compartment was damaged. These strikes occurred amid ongoing Russian air assaults, with Ukraine's National Security and Defense Council Secretary Rustem Umerov stating plans to intensify strikes on Russia's logistics and fuel infrastructure. The Kirishinefteorgsintez refinery, with an annual capacity of 18.4 million tons, experienced explosions and fire following the Ukrainian attack. The RFS Grad 575, one of Russia's newest warships commissioned in late 2022, was struck while in transit. In related developments, Greece plans to transfer 60 M110A2 203mm howitzers, 150,000 shells, and thousands of rockets to Ukraine through a Czech-led defense agreement. These obsolete systems will be delivered from Greek military stockpiles. Meanwhile, analysis suggests Russia's refining capacity is collapsing, deepening its government deficit and potentially making the war unsustainable. This follows earlier reports from October 4th, 2025, detailing a Russian drone strike on a train station in Shostka, Sumy region, which resulted in at least 30 injuries, according to Ukrainian President Volodymyr Zelenskyy. A video emerged showing a Russian Shahed drone striking a passenger train in Shostka between 10:05 AM and 10:34 AM UTC. Separately, a warning was issued at 13:07 UTC on October 4th, 2025, regarding the probable launch of ballistic missiles from the east. Earlier reports also indicated that the Foreign Intelligence Service of Ukraine had recorded China providing Russia with satellite intelligence data for missile strikes in Ukraine. President Zelenskyy described the Shostka railway station attack as a "savage Russian drone strike" and "terror," calling for stronger action from the West.
