Russia claims Ukraine launched unmanned aerial vehicles to attack a Greek oil tanker off the Black Sea coast, marking the latest in a series of similar incidents in the region.
Two oil tankers were attacked by drones in the Black Sea while en route to a Russian port, with one vessel leased by US oil and gas corporation Chevron.
Russia's elite Rubikon unit deployed a Lancet unmanned aerial vehicle to intercept a Ukrainian unmanned surface vessel in the Black Sea, over 100 km from its launch position.
Ukrainian media released video of uncrewed surface vessels attacking two oil tankers suspected of belonging to Russia's "dark fleet" off the coast of Turkey.
Two "shadow ships" under international sanctions for transporting Russian oil suddenly exploded and caught fire in the Black Sea, though the cause remains unclear.