Though never stated as such, the purpose of the “00’s” was clear: to kill people who proliferated or attacked the West’s nuclear weapons systems, missiles, or otherwise threatened to cause a nuclear war. When nobody was doing so, they could also do other murderous missions.
But it does raise the interesting question of would the Vatican approve of the killing of those who tried to cause a nuclear war?
You'll have your answer if Ahmadinejad wakes up with a halberd in his chest.