Two ships have been hit in drone attacks off Bulgaria’s Black Sea coast, with one of them sinking, Prime Minister Rumen Radev said. The Ukrainian-owned Chelsea 3, which was sailing under a Maltese flag, was hit by three drones and damaged about 18 nautical miles (33km) off Bulgaria at about 1:30am on Tuesday, Radev said. Bulgarian officials said five crew members had been rescued from the ship that sank but 11 remain missing at sea. The vessel went down off the coast of the village of Krapets, near the Romanian border and was identified as the Guinea-Bissau-flagged cargo ship HS...