11.   Moscow also wants the decommissioned warheads to be destroyed, while Washington insists on storing them in case of radical changes in the security environment in the future.

12.   Russia also opposed the U.S. demand that the countries be allowed to store decommissioned warheads instead of destroying them.

13.   The environmentalists say HEU, taken from decommissioned Russian warheads, can easily be recycled for use in nuclear weapons if it falls into the wrong hands.

14.   As a hedge, the United States wants to keep decommissioned warheads in its active stockpile rather than destroy them, Pentagon officials have said.

15.   They also know that Russia has no cash to replace its decommissioned warheads.

16.   The treaty allows both sides to mothball a portion of the decommissioned warheads for potential future use.

17.   The United States wants to keep decommissioned warheads in its active stockpile as a hedge against changing conditions.