What is the news mainly about? [originaltext] The Russian navy is carrying ou

The Russian navy is carrying out a big rescue operation to save the lives of 7 men trapped in a diving vessel at the bottom of the Pacific Ocean. 10 Russian ships and a Japanese ship have been sent to the scene off the Kamchatka Peninsula. The Russian news agency Tass quoted a Russian navy spokesman as saying that the Americans had also been asked to help. From Moscow, Steve Rosenberg has this report.
   The incident happened off the Kamchatka Peninsula 9,000 kilometers east of Moscow. The deep-sea submersible which is normally used for underwater rescue operations was taking part in a military training exercise on Thursday morning, when its propeller got twisted in fishing nets, dragging the vessel to the bottom of the Pacific Ocean. There are reported to be 7 submariners on board. The Russian navy has launched an urgent rescue mission. The fleet’s commander has described the. situation as complex and serious. The trapped sailors, he says, have enough air and electricity to last for another 48 hours.