Ukraine Claims Strike on Russian Kalibr Missile Warship in Baltic Sea

Ukraine's Security Service (SBU) said it struck Russia's Kalibr-capable Naro-Fominsk missile corvette in the Gulf of Finland, extending Kyiv's campaign against Russian naval assets into the Baltic Sea.

The SBU said the operation took place overnight on November 10–11, targeting the Buyan-M-class warship while Ukrainian forces carried out a broader attack on Russian infrastructure near the Baltic port of Ust-Luga.

Finland's military confirmed on November 12 that it had detected a strike on a Russian warship in the Gulf of Finland the previous day.

"The Finnish Defence Forces detected... a strike on a Russian warship in the Gulf of Finland area and has monitored the development of the situation," a military spokesperson told Reuters.

Finnish officials said the regional security situation remained stable and that Finland faced no immediate military threat.

The SBU identified the targeted vessel as Naro-Fominsk, a Project 21631 Buyan-M-class missile corvette assigned to Russia's Baltic Fleet.

The vessel is equipped with a vertical launch system capable of deploying Kalibr cruise missiles, which Russia has used in attacks against Ukraine.

According to Ukrainian media citing the SBU, the attack was planned in advance and coordinated with strikes against oil infrastructure at Ust-Luga.

Estonian media reported that the Russian vessel subsequently returned toward St Petersburg.

The Russian Defence Ministry had not publicly confirmed the attack, and neither the extent of damage nor possible casualties could be independently verified.

The incident coincided with drone alerts across the Baltic region, where NATO aircraft were scrambled following reports of unmanned aerial vehicles entering allied airspace.

The alleged strike highlights Ukraine's growing ability to threaten Russian military assets beyond the Black Sea, including in waters close to NATO member states.