A $70 million operation was launched to recover the sunken Russian submarine Kursk. Here’s how one of the most expensive and difficult salvage missions in history unfolded.

Dygalo said that the unmanned vessel had mapped out the sitewhere the Kursk lies. "The maps show in detail the situation 50 meters (100 feet)around the submarine," he said.

MOSCOW, Aug. 15 -- Russian rescuers battling Arctic storms failed today in an attempt to reach survivors aboard the disabled submarine Kursk, but a second effort began tonight as the oxygen supply ...

The Russian Kursk submarine disaster captured the attention of millions, and the families of the crew were left struggling to find out what really happened to their loved ones.

In August 2000, the Kursk Oscar -class submarine was participating in Russia’s Summer-X exercise when tragedy prevailed. As part of the drill, Kursk was meant to launch a pair of training torpedoes.

Deputy Prime Minister Ilya Klebanov, who is responsible for the Kursk salvage operation, said it would take up to three days to dry out the submarine for an internal inspection, the Interfax news ...

Russian President Vladimir Putin deliberately hindered international rescue efforts after the Kursk submarine sank in 2000 in order to protect his country's nuclear secrets, Bill Clinton has alleged.

The navy ’ s commander in chief, Vladimir Kuroyedov, has said he is 80 percent certain the two blasts aboard the Kursk during naval maneuvers were caused by a collision with a foreign submarine.