Russia denied involvement in recent Black Sea vessel strikes, while Bulgarian Prime Minister Rumen Radev stated that logical evidence points toward Moscow despite a lack of direct proof.

From the articleGreek container ship sinks after drone attack off Bulgaria | ReutersAlso in ZIM vessel sinks in Black Sea after being hit by 3 suicide boat drones; no injuries, Ship sinks off Bulgaria’s Black Sea coast after being hit by drones, Ship chartered by Israeli company sinks in Black Sea after drone attack