Overview
- Ukraine's Security Service described a joint operation with military counterintelligence and the navy targeting the vessel in the Black Sea port.
- Officials said Sub Sea Baby underwater drones struck the submarine and caused severe damage.
- The agency released footage purporting to show a powerful blast in the harbor.
- Authorities called it a first-of-its-kind strike against a submarine using such drones and said the boat is out of service.
- The SBU said the sub carried four Kalibr launch ramps and valued the loss at about $400 million.