Naval Mines

[David Morris]

https://twitter.com/kyivindependent/status/1505198986751324169?s=21

⚡️Journalist: Russia mined commercial routes in Black Sea.

Andriy Klymenko, the chief editor of news site BlackSeaNews, said on March
19, citing his sources, that Russia had deployed the naval mines in the
northwestern part of the Black Sea.

Meanwhile, Russia issued a warning to ships claiming that the mines have
been deployed by Ukraine at its ports, and are now drifting.