SYMPOSIUM ON "FOREIGN POLICY".

The article reports that the ecology of a national foreign policy decision system poses varying degrees of constrains upon its options and behavior. By this is meant not merely the physical environment, although clearly such factors as the worldwide distribution of resources and quality of life are important, too. Other constraints include the structure of the international system, varying levels of technology, enduring patterns of trade and other transactions, perceptions, norms of individual and state behavior, and, more particularly, religion and other cultural components.