Video appears to show one of the tankers broken in half and sinking amid a heavy storm, with oil visible in the water.

Two oil tankers off the coast of Crimea have sunk, leading to thousands of tons of oil being spilled and an intense search and rescue operation.

Vessel had capacity of 4,200 tonnes of oil products; another damaged tanker drifting; at least one person killed as Russia works to evacuate crew amid stormy weather