The individual states that compose the contemporary international system are of greatly differing size-China has more than twice the population of the well over 50 states of Africa, and sharp contrasts in this regard characterize every continent. Since its founding not quite half-a-century ago, membership in the United Nations has more than tripled. Facts such as these are commonly known. But what is the desirable scale of political units endowed with sovereignty? Has the contemporary system of states, as created by the buffeting currents of past history, proven itself to be most conducive to international peace, economic prosperity, and cultural flowering? And, looking into the future, what tendencies should be encouraged: those towardformation of ever larger-sized entities through political union and centralization of power, or those toward disunion, creating a more differentiated mosaic of independent and presumably more homogenous states, loosely tied in regional federations? Such questions, although age-old, appear ahistorical and unrealistically abstract, hence are seldom considered outside the frame of specific disputes and aspirations-disputes within states that are formally unitary but that contain significant ethnic, linguistic, or otherwise culturally distinct minorities that seek selfdetermination, or between states that try to resolve conflicts between them or wish to form alliances aimed at enhancing state interests. In a time of acute international crisis, Leopold Kohr, an American economist (born in Austria in 1909), posed such questions in a refreshingly original, even offbeat, article entitled Disunion now: A plea for a society based upon autonomous units. The article, whose text is reprinted below in full with the kind permission of Professor Kohr (who resides in England), appeared in the 26 September 1941 issue of the American weekly magazine The Commonweal. The thesis of Disunion now has been extended into one of Kohr's books, The Breakdown of Nations, first published (in London, by Routledge and Kegan Paul) in 1957. (Kohr's thinking on this subject influenced the late E. F. Schumacher in his development of the small is beautiful theme.) The continued, indeed increasing, relevance of the issue raised by Kohr, although not necessarily the soundness of the solution proposed by him, has been especially borne out by recent