Who sank Russian cargo ship Ursa Major, was NATO involved, and was it torpedoed? The mystery around the Ursa Major cargo ship has raised global security questions. The vessel sank in December 2024 near Spain after explosions. Reports say the ship may have carried nuclear reactor components. Investigations point to military activity and possible sabotage. Governments have released limited information. The incident links to Russia, North Korea, NATO, and the war in Ukraine. This explainer presents the timeline, cargo claims, military tracking, and theories about the cause of the sinking.
