Risk Analysis of Nuclear Deterrence
Even minor changes in our nuclear weapons strategy have been rejected as too risky. The proposed studies avoid that criticism, and by exposing the existing risk will provide the motivation needed to consider new options. They also will provide a road map for rapidly reducing the nuclear threat by identifying the most likely failure mechanisms. Risk analysis studies also will illuminate the relationship between nuclear terrorism and nuclear war.
Source: Defusing the nuclear threat, Martin Hellman.