Activists say the spill - caused after two ships ran were battered by a storm - could cover an area of 400 sq km.

Ukraine has accused Russia of a cover-up over the spill of thousands of barrels of oil from two tankers that split in two ...

The oil was released by two aging Russian tankers that were damaged during a heavy storm in the Kerch Strait on Dec. 15. At least 2,400 metric tons of oil spewed into the sea, Russian officials said.

Russia has suffered more than any other country so far from the Kerch Strait accident," Dmitry Markin of Greenpeace said. "However, the majority of the leaked fuel oil is still in the sea.

Up to 5,000 tonnes of oil has now leaked, and media reports and official statements analysed by BBC Verify suggest the spill has spread across the Black Sea and the Sea of Azov. A senior Russian ...

The mishap resulted in a devastating oil spill that damaged miles (kilometers) of coastline along the Black Sea ... mazut spilling into the Kerch Strait. A crew from Russia’s Marine Rescue ...