# Ukraine’s Drone and Missile Raids Hit Deep Inside Russia, Exposing St. Petersburg and Warship at Kronstadt

*Wednesday, June 3, 2026 at 12:05 PM UTC — Hamer Intelligence Services Desk*

**Published**: 2026-06-03T12:05:04.286Z (2h ago)
**Category**: conflict | **Region**: Eastern Europe
**Importance**: 9/10
**Sources**: OSINT
**Permalink**: https://hamerintel.com/data/articles/6376.md
**Source**: https://hamerintel.com/summaries

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**Deck**: Ukrainian forces say they hit a Russian guided‑missile corvette at Kronstadt as swarms of drones skimmed the Gulf of Finland and triggered small‑arms fire on the streets of St. Petersburg. The strikes, alongside a claimed Neptune missile attack on a major oil refinery, show Kyiv pushing the war deep into Russian territory and forcing Moscow to defend industrial and naval assets once thought untouchable.

Russia’s showcase city of St. Petersburg woke up to the sound of drones and gunfire as Ukraine pushed the battlefield hundreds of kilometers beyond the front line, targeting a warship at Kronstadt and key energy infrastructure in southern Russia. For the Kremlin, the message is that Ukraine’s war is no longer contained to Donbas trenches or border towns — it is testing the defenses of Russia’s second city and its fleet.

Overnight into 3 June, Ukrainian forces carried out a complex unmanned raid against targets around St. Petersburg and the nearby naval base at Kronstadt. Ukraine’s Unmanned Systems Forces later claimed to have hit the Russian missile corvette Boikiy, a Project 20380 guided‑missile ship of the Baltic Fleet, in the Veleshchinsky dry dock at Kronstadt. Unverified footage and local reports described a large plume of smoke rising from the area. Separate reporting noted that one Ukrainian FP‑1 drone flew over the Gulf of Finland just a few meters above the water, maintaining an ultra‑low altitude designed to evade radar. In the city itself, a member of Russia’s National Guard was filmed firing an AKS‑74U assault rifle into the sky at a passing FP‑1 drone as civilians looked on. Far to the south, Ukraine’s Navy claimed that on 31 May its Neptune cruise missiles struck the Novoshakhtinsk Oil Refinery in Rostov Oblast, damaging two atmospheric‑vacuum distillation units capable of processing up to 2.5 million tons of oil.

For Russian civilians in St. Petersburg, the spectacle was jarring: a major economic forum underway in the city, while soldiers take potshots at drones overhead. The image of a National Guard trooper trying to shoot down a kamikaze UAV with a carbine — with bystanders nearby — captures how the front line is bleeding into urban life. Residents of Kronstadt and nearby districts faced the risk of debris and secondary explosions if the reported hit on Boikiy is confirmed, while workers at Novoshakhtinsk now confront both physical danger and the prospect of prolonged disruption to their livelihoods.

Strategically, the operations form part of Ukraine’s broader campaign to bring the war home to Russia’s strategic depth. Hitting a modern corvette in dry dock is more than a symbolic blow: it strains Russia’s ability to regenerate naval combat power and complicates planning for Baltic Sea operations. Attacks on refineries like Novoshakhtinsk not only reduce Russia’s fuel output but also feed into a wider gasoline crisis already reported in cities such as St. Petersburg, Belgorod, Kursk, and occupied Luhansk, where roughly 40% of refining capacity is said to be offline after repeated Ukrainian strikes. The low‑altitude FP‑1 flight over the Gulf of Finland demonstrates that Ukrainian engineers can now route drones along complex paths under radar coverage, forcing Russia to deploy more layered, expensive air defenses around cities that once felt secure.

The more Ukraine expands its strike envelope, the more Moscow is forced to choose between defending the front and protecting deep‑rear assets. Kremlin spokesman Dmitry Peskov insisted Russia’s response to such attacks “will be, and already is, systemic in nature,” arguing that the ongoing military operation is meant to stop strikes on Russian territory. But each successful hit on a refinery, shipyard, or fleet unit increases pressure on Russian command to divert missiles and interceptors away from the battlefield and toward critical infrastructure.

What to watch now is whether Ukraine can sustain this tempo of deep strikes and how Russia adapts. Protecting the Baltic Fleet’s assets in Kronstadt may require dispersing ships, relocating maintenance, or accepting that even high‑value vessels are no longer safe in port. Russia’s gasoline shortages could worsen if more refineries are hit, with knock‑on effects for military logistics, civilian transport, and domestic political discontent.

## Key Takeaways

- Ukraine’s Unmanned Systems Forces say they hit Russia’s guided‑missile corvette Boikiy in dry dock at Kronstadt, part of a wider drone raid around St. Petersburg.
- An FP‑1 drone reportedly flew at extremely low altitude over the Gulf of Finland, exposing limits in Russian radar coverage.
- Footage from St. Petersburg shows a Russian National Guard soldier trying to shoot down a Ukrainian drone with an assault rifle as civilians watch.
- Ukraine’s Navy claims Neptune missiles struck the Novoshakhtinsk Oil Refinery on 31 May, damaging major processing units.
- Combined strikes on naval and energy targets deepen pressure on Russia’s ability to protect its strategic rear and maintain fuel supplies.

## Outlook & Way Forward

In the short term, Russia is likely to tighten air-defense rings around St. Petersburg, Kronstadt, and key industrial sites, deploying more short‑range systems, electronic warfare, and patrol aircraft. However, defending a vast urban and industrial landscape against small, low‑flying drones remains cost‑inefficient, and ad‑hoc measures like small‑arms fire underscore the gap between the threat and the tools available.

For Ukraine, deep strikes offer both military and psychological dividends: disrupting fuel and fleet assets that support frontline operations and signaling to Russian citizens that the war carries real costs at home. The risk for Kyiv lies in overreach that could provoke escalatory Russian responses against Ukrainian cities or energy networks.

Internationally, attacks on refineries and naval facilities will sharpen debates in Western capitals over the range and targets of weapons they supply to Ukraine. As Kyiv pushes the conflict further into Russia’s rear, the line between supporting defensive operations and enabling strategic strikes inside Russia will come under renewed scrutiny, even as Moscow’s own missile attacks on Ukraine’s infrastructure continue unabated.