ABSTRACT
On July 16, 1960 the world entered the sixteenth year of the nuclear era. Yet we are increasingly aware that after living with nuclear bombs for fifteen years we still have a great deal to learn about the possible effects of a nuclear war. We have even more to learn about conducting international relations in a world in which force tends to be both increasingly more available and increasingly more dan gerous to use, and therefore in practice increasingly unusable. As a result of this continuous secular change in the basic structure of the international situation, foreign and defense policies formulated early in the nuclear era badly need review and reformulation.
