"The toxic legacy of the Cold War lives on in Russia's Arctic, where the Soviet military dumped many tonnes of radioactive hardware at sea."

"For more than a decade, Western governments have been helping Russia to remove nuclear fuel from decommissioned submarines docked in the Kola Peninsula - the region closest to Scandinavia.

But further east lies an intact nuclear submarine at the bottom of the Kara Sea, and its highly enriched uranium fuel is a potential time bomb.

This year the Russian authorities want to see if the K-27 sub can be safely raised, so that the uranium - sealed inside the reactors - can be removed."

Laurance Peter reports for BBC News January 23, 2013. [2]