When religious extremists get their nukes, it will be possible for them to use their "reputation" that they do not fear death and annihilation to blackmail the world into unconditional surrender. The reason the cold war remained "cold" is because both the atheist commies and the capitalist cowboys feared the mutually assured destruction ("MAD"). But this time the religious extremists might capitalize on our perception that the fear of death does not apply to them, and so the rules of the game are different now. This is one of the cases of "I know that you know that I know that you know that I know... etc."
World Jewish Congress: Nazi train treasures must go to rightful owners (Reuters)
from the article: Syria: Israeli nuclear weapons are sparking Mideast arms race