Who/What Sunk the Russian Cargo Ship Ursa Major Carrying Nuclear Parts to North Korea? Torpedo?

The sinking of the Russian ship Ursa Major near Spain...

Was a Russian Ship Carrying Nuclear Tech to North Korea? The Mystery of the Ursa Major

Mystery Deepens Around Sunken Russian Ship Off Spain | Was It Carrying Nuclear Materials? | GRAVITAS

Russian cargo ship that sank off Spain’s coast, is suspected of carrying nuclear reactor to N. Korea

NUCLEAR PLAN OF THE DECADE! Secret Russia-North Korea Deal! REAL REASON Why Russia SUNK OWN SHIP!

MISTERIOSO HUNDIMIENTO DE UN BARCO RUSO EN EL MEDITERRÁNEO: ¿Qué transportaba y a dónde iba?