The emphasis in this paper is on the importance of nuclear weapons as wartime hazards to a nation's populace. Non-nuclear weapons may be a more serious threat to small countries in close proximity to the attacker than they are to the United States, though they are a much less serious threat than nuclear weapons in large-scale attacks against population centers. In some limited circum¬stances, bacteriological weapons are a potential danger. Although there is no guarantee that novel "Sunday Supplement" type super-effective weapons will not appear in the future, there are none in the offing. Many new developments have lethal applications, but we know of none that threatens to become of major civil defense concern in the next decade or two. The logistics of delivery and distribution have so far always overwhelmingly favored the more compact and more far-reaching effects of nuclear weapons (as suggested in Fig. 1).
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