Bulgarian Prime Minister Rumen Radev says drones struck two ships in the Black Sea, sinking one and prompting emergency rescue operations. He said early Tuesday that one crew member from the sunken vessel was rescued but didn't give details on the others aboard. Rescuers evacuated all 15 crew members from the other ship. He called the attacks “absolutely unacceptable” and sought NATO and European Union assistance, saying Bulgaria lacked clear evidence to identify who was responsible.