1.   Before the submarine is lifted, divers will sever the front section, which Russian officials say may contain unexploded torpedoes.

2.   Divers must also cut off the fore section of the submarine, which will be left on the sea floor because Russian officials say it may contain unexploded torpedoes.

3.   It is cutting off the mangled fore section first because officials say it may contain unexploded torpedoes and may threaten the lifting operation.

4.   Officials have said the mangled front is too damaged to provide any clues and may contain unexploded torpedoes that would make raising it risky.

5.   Officials say lifting the front compartment could be dangerous since it may contain unexploded torpedoes.

6.   One of the reported fears was that it could contain unexploded torpedoes.

7.   Russian officials say they are leaving it behind because they fear it may contain unexploded torpedoes, but some have said it could be lifted later.

8.   Russian officials say it is too dangerous to lift because it could contain unexploded torpedoes.

9.   Russian officials say the fore section may contain unexploded torpedoes that make lifting it too dangerous.

10.   The disfigured fore section is being cut off because officials say it may contain unexploded torpedoes and may threaten the lifting operation.