There is already a mountain of evidence that Saddam Hussein is gathering weapons for the purpose of using them. And adding additional information is like adding a foot to Mount Everest. ↗
In a world which is armed to its teeth with nuclear weapons, every quarrel or difference of opinion may lead to violence of a kind quite different from what is possible today. ↗
My guess is that nuclear weapons will be used sometime in the next hundred years, but that their use is much more likely to be small and limited than widespread and unconstrained. ↗
The widespread diffusion of nuclear weapons would make many nations able, and in some cases also create the pressure, to aggravate an on-going crisis, or even touch off a war between two other powers for purposes of their own. ↗
To the extent that these advanced weapons or their components are treated as articles of commerce, perhaps for peaceful uses as in the Plowshare program, their cost would be well within the resources available to many large private organizations. ↗