Ukraine claims it has carried out a first-of-its-kind underwater drone attack on a Russian submarine in the Black Sea port of Novorossiysk. Kyiv says its “Sea Baby” submersible drones disabled a Varshavyanka-class submarine, known as the “Black Hole,” knocking the $400 million vessel out of service. The alleged strike marks a major escalation in Ukraine’s naval campaign as Kyiv expands its drone warfare from air and sea to underwater operations.