Myron Weiner is Ford International Professor in the Department of Political Science at the Massachusetts Institute of Technology. He was director of the Center of International Studies at MIT from 1987 to 1992.
For helpful comments on an earlier draft of this paper I am grateful to Rogers Brubaker, Karen Jacobsen, Robert Jervis, Stephen Krasner, Robert Lucas, Rosemarie Rogers, and Sharon Russell.
1. Timothy Garton Ash, "The German Revolution," The New York Review of Books, December 21, 1989, pp. 14-17, provides an informed eye-witness account of how the exodus of East Germans in the summer and fall of 1989 led to the dismantling of the Berlin Wall and the absorption of the East German state into West Germany.
2. On secessionist movements, see Allen Buchanan, Secession: The Morality of Political Divorce from Fort Sumter to Lithuania and Quebec (Boulder, Colo.: Westview Press, 1991). This otherwise excellent analysis by a political philosopher does not deal with the problem of minorities that remain in successor states.
3. Democratization and political liberalization of authoritarian regimes have enabled people to leave who previously were denied the right of exit. An entire region of the world, ranging from Central Europe to the Chinese border, had imprisoned those who sought to emigrate. Similar restrictions continue to operate for several of the remaining communist countries. If and when the regimes of North Korea and China liberalize, another large region of the world will allow its citizens to leave. See Alan Dowty, Closed Borders: The Contemporary Assault on Freedom of Movement (New Haven: Yale University Press, 1987), which provides a useful account of how authoritarian states engaged both in restricting exodus and in forced expulsions. For an analysis of the right to leave and return, see H. Hannum, The Right to Leave and Return in International Law and Practice (London: Martinus Nijhoff, 1987). As has happened twice before in this century, the breakup of an empire is producing large-scale ethnic conflict and emigration. With the withdrawal of Soviet power from Eastern Europe and the disintegration of the Soviet state itself, conflicts have erupted between Turks and Bulgarians in Turkey; Romanians and Hungarians in Transylvania; Armenians and Azeris in the Caucasus; Albanians, Croatians, Slovenians, Bosnians, and Serbs in former Yugoslavia; Slovaks and Czechs in Czechoslovakia; and among a variety of ethnic groups in Georgia, Moldova, Ukraine, and in the new states of Central Asia. There is a high potential for continued emigration of minorities among each of these states. See F. Stephen Larrabee, "Down and Out in Warsaw and Budapest: Eastern Europe and East-West Migration," International Security, Vol. 16, No. 4 (Spring 1992), pp. 5-33.
4. A long-term decline in the birth rate in advanced industrial countries combined with continued economic growth may lead employers to seek low-wage laborers from abroad. Transnational investment in manufacturing industries may reduce some manpower needs, but the demand for more workers in the service sector seems likely to grow, barring technological breakthroughs that would replace waiters, bus conductors, nurses, and household help. Employers in Japan, Singapore, and portions of the United States and Western Europe are prepared to hire illegal migrants, notwithstanding the objections of their governments and much of the citizenry. So long as employer demand remains high, borders are porous, and government enforcement of employer sanctions is limited, illegal migration seems likely to continue and in some countries to increase.
5. There have already been mass migrations within and between countries as a result of desertification, floods, toxic wastes (chemical contamination, nuclear reactor accidents, hazardous waste), and threats of inundation as a result of rising sea levels. According to one estimate, two million Africans were displaced in the mid-1980s as a result of drought. See Jodi L. Jacobson, Environmental Refugees: A Yardstick of Habitability, Worldwatch Paper No. 86 (Washington, D.C.: WorldWatch Institute, 1988).
6. Information concerning employment opportunities and changes in immigration and refugee laws is quickly transmitted to friends and relatives. Not only do many people in the Third World view the United States and Europe as potential places for migration, but differences and opportunities within the Third World are also becoming better known. Indonesians, for example, are...