From a scientific perspective there is some indication that a nuclear war could deplete the earth's ozone layer or, less likely, could bring on a new Ice Age - but there is no suggestion that either the created order or mankind would be destroyed in the process.

Risk-taking is the essence of innovation.

For some years I have spent my time on exactly these questions - both in thinking about ways to prevent war, and in thinking about how to fight, survive, and terminate a war, should it occur.

New developments in weapon systems during the 1950s and early 1960s created a situation that was most dangerous, and even conducive to accidental war.

Deterrence itself is not a preeminent value; the primary values are safety and morality.

Clearly, the first task is to gain acceptance of a more reasonable view of the future, one that opens possibilities rather than forecloses them.

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.