Ukraine conducted a massed drone strike of over 350 drones on the Primorsk oil refinery in the Leningrad region, setting it on fire.
Multiple high-reliability sources confirm the core facts of this event.
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Ukrainian drones attacked the Primorsk refinery, causing fires confirmed by local governor and reliable sources.
Ukrainian forces struck Russian military and oil infrastructure near Primorsk, Leningrad Oblast on May 3.
Ukraine struck a Russian Kalibr missile carrier and patrol boat in Leningrad Oblast, according to President Zelensky.
Ukraine struck Russian warships and a shadow tanker in Primorsk Port.
Ukrainian forces destroyed a Kara-kurt class missile boat in Primorsk on May 3, which carried Kalibr missiles.
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Extraction metadata
Extracted: 2026-07-18T16:57:30.917Z
Source story: day-1536b-2026-05-11