Greece has advised its shipping companies to review security measures after drones struck two Greek-operated oil tankers in the Black Sea, including one chartered by Chevron. Officials urge crews to increase vigilance as war insurance costs rise

Three Greek-managed tankers were struck by drones near a major Black Sea oil terminal, escalating maritime security concerns.

According to Ukrainian sources, the ship was heading to the port of Izmail on the Danube to load grain and was at risk of sinking when it was hit yesterday morning (27/12) by a Russian mine