Rescuers are searching for eight sailors reported missing after a powerful storm hit the Sea of Azov and parts of the Black Sea on Sunday.Russian officials say four ships have sunk, including an oil tanker, and four others are in danger of breaking up.
Up to 2,000 metric tons of fuel oil have leaked from the tanker in the Kerch Strait, which links the two seas.
A big clean-up operation is now under way, amid fears of an environmental disaster in the area.
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