1.   The Russian submarine has returned to its base on the Kola peninsula.

2.   At dawn the next day, a Russian submarine sank it with a single torpedo.

3.   A Russian submarine plunged to the seabed in the Barents Sea on Sunday during a naval exercise, possibly after an explosion on board, officials said Monday.

4.   According to the morning news, the Kursk, a powerful Russian nuclear submarine, had been crippled by an accident during a military exercise.

5.   Depots for nuclear fuel for Russian submarines and icebreakers, some of which has also been targeted by thieves, are also a concern.

6.   If any of the crew of a stricken Russian submarine are still alive, their world has gone pitch black and cold.

7.   In Norway, which closely monitors Russian submarines operating off its coastal waters in the Barents, said there was no sign of a radiation leak.

8.   It was not clear whether the Russian submarine was equipped with such devices.

9.   Last week the world read them and connected with the core of the nightmare that was the Russian submarine Kursk.

10.   Navy officials are less concerned about the presence of a solitary Russian submarine in the eastern Pacific than they are about the operating capabilities of the Akula class.