A Geriatric Peace? Mark L. Haas the Future of U.S
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A Geriatric Peace? A Geriatric Peace? Mark L. Haas The Future of U.S. Power in a World of Aging Populations In coming decades, the most powerful states in the international system will face a challenge unlike any other experienced in the history of great power politics: signiªcant aging of their populations. Due to steep declines in birthrates over the last century and substantial increases in life expectancies, all of the current great powers are growing older—in most cases at a substantial rate and extent.1 By 2050 at least 15 percent of the citizens in these states will be over 65.2 In Japan more than one out of every three people will be over this age. China alone in 2050 will have more than 329 million people over 65, which is equal to the entire current populations of France, Germany, Japan, and the United Kingdom com- bined.3 As social aging progresses over the next half century, the populations in Germany, Japan, and Russia are expected to shrink signiªcantly. Russia’s population is already decreasing by nearly 700,000 people per year, and Japan, too, is currently experiencing absolute population decline.4 Russia’s aging problem is so severe that President Vladimir Putin asserted in 2006 that de- mography is “Russia’s most acute problem today.”5 Global aging has key ramiªcations for the future of international relations. This article concentrates on the effects of this variable for the future of U.S. security. Global population aging will inºuence U.S. foreign policies in ªve major Mark L. Haas is Assistant Professor of Political Science at Duquesne University. For their helpful comments on previous drafts of this article, the author thanks Clifford Bob, Ste- phen Brooks, Jacques Hymans, Paul Staniland, William Wohlforth, and International Security’s anonymous reviewers. The author is also grateful for a Presidential Fellowship from Duquesne University, which aided in the completion of this article. 1. The eight states I consider to be great powers, based on a combination of current and potential military and economic power, are China, France, Germany, India, Japan, Russia, the United King- dom, and the United States. 2. United Nations, World Population Prospects: The 2004 Revision Population Database (New York: United Nations, 2006), http://esa.un.org/unpp/index.asp?panel?2, select variant: medium. Throughout the article, I use the medium variant of UN population projections to avoid what some might consider overly optimistic or pessimistic assumptions. Even the medium variant, however, anticipates a signiªcant increase in fertility rates in states that currently have very low numbers in this area. 3. Ibid. 4. Ibid.; and Norimitsu Onishi, “Japan’s Population Fell This Year, Sooner Than Expected,” New York Times, December 24, 2005. 5. Quoted in C.J. Chivers, “Putin Urges Plan to Reverse Slide in the Birthrate,” New York Times, May 11, 2006. International Security, Vol. 32, No. 1 (Summer 2007), pp. 112–147 © 2007 by the President and Fellows of Harvard College and the Massachusetts Institute of Technology. 112 Downloaded from http://www.mitpressjournals.org/doi/pdf/10.1162/isec.2007.32.1.112 by guest on 27 September 2021 A Geriatric Peace? 113 ways in coming decades. First, this phenomenon will be a potent force for the continuation of U.S. power dominance, both economic and military. Aging populations are likely to result in the slowdown of states’ economic growth at the same time that governments face substantial pressure to pay for massive new expenditures for elderly care. This double economic dilemma will create such an austere ªscal environment that the other great powers will lack the re- sources necessary to overtake the United States’ huge power lead. Investments designed to improve overall economic growth and purchases of military weaponry will be crowded out. Compounding these difªculties, although the United States is growing older, it is doing so to a lesser extent and less quickly than all the other great powers. Consequently, the economic and ªscal costs for the United States created by social aging (although staggering, especially for health care) will be signiªcantly lower for it than for potential competitors. Global aging is therefore not only likely to extend U.S. hegemony (because the other major powers will lack the resources necessary to overtake the United States’ economic and military power lead), but deepen it as these others states are likely to fall even farther behind the United States. Thus despite much re- cent discussion in the international relations literature and some policymaking circles about the likelihood of China (and to a lesser extent the European Union) balancing U.S. power in coming decades, the realities of social aging and its economic and military effects make such an outcome unlikely.6 Second, global aging increases the likelihood of continued peaceful relations between the United States and the other great powers. Studies have shown that the probability of international conºict grows when either the dominant country anticipates a power transition in favor of a rising state or states, or when such a transition actually takes place.7 By adding substantial support to the continuation of U.S. hegemony, global aging works against either outcome from transpiring. An aging world therefore decreases the probability that ei- ther hot or cold wars will develop between the United States and the other great powers. 6. On this debate, see Stephen M. Walt, Taming American Power: The Global Response to U.S. Primacy (New York: W.W. Norton, 2005). I am referring to traditional “hard” balancing, which involves di- rect military power and threats, not “soft” balancing, which includes such actions as withholding cooperation from the hegemon, attempting to restrict the hegemon’s freedom of action through entangling diplomacy in prominent international organizations, and economically aiding the hegemon’s potential enemies. On this debate, see Robert A. Pape, “Soft Balancing against the United States,” International Security, Vol. 30, No. 1 (Summer 2005), pp. 7–45. 7. Dale C. Copeland, The Origins of Major War (Ithaca, N.Y.: Cambridge University Press, 2000); and Robert Gilpin, War and Change in World Politics (Cambridge: Cambridge University Press, 1981). Downloaded from http://www.mitpressjournals.org/doi/pdf/10.1162/isec.2007.32.1.112 by guest on 27 September 2021 International Security 32:1 114 Third, the effects of global aging will likely increase the United States’ uni- lateral foreign policy tendencies. The aging problem in the other great powers is so severe that these states will have tremendous difªculty maintaining the extent of their international commitments. Consequently, when the United States engages in major international undertakings in the future, the other ma- jor actors in the system will be able to offer less help than they can today. Fourth, although the United States is in better demographic shape than the other great powers, it, too, will confront massive new costs created by its own aging population. As a result, it will most likely be unable to maintain its cur- rent international position. Thus while the United States will be even more se- cure from great power rivalry than it is today, it (and its allies) will be less able to realize other key international objectives, including preventing the prolifer- ation of weapons of mass destruction (WMD), funding nation building, engag- ing in military humanitarian interventions, and mitigating the effects of local security problems. Global aging, in short, is likely to result in a great power “geriatric peace,” but this same phenomenon may threaten other important U.S. international interests, including by facilitating international conºict in non-great power relations. Fifth, as the costs created by the United States’ aging population grow, the saliency of neo-isolationist or “offshore balancing” grand strategies is likely to increase.8 In a time of ªscal austerity brought on by social aging, these strate- gies are likely to become more compelling because they mesh with the need to reduce spending. An aging world therefore increases the likelihood that the United States will withdraw from the international system even more than budget constraints dictate. Despite the great signiªcance of global aging for the future of international politics in general and U.S. security in particular, little systematic analysis in the international relations literature has been dedicated to this subject. Most prominent analyses of great power politics and the balancing debate with re- gard to U.S. power, for example, either do not mention this issue or do so only in passing.9 More generally, scholars have long recognized the importance of population to states’ economic and military power, but no study analyzes in a comprehensive manner the effects of social aging on these relationships (until recently, signiªcant population aging was not considered a likely outcome). 8. See Christopher Layne, “Offshore Balancing Revisited,” Washington Quarterly, Vol. 25, No. 2 (Spring 2002), pp. 233–248. 9. For a partial exception, see Michael Mandelbaum, The Case for Goliath: How America Acts as the World’s Government in the Twenty-ªrst Century (New York: PublicAffairs, 2005), pp. 182–186. Downloaded from http://www.mitpressjournals.org/doi/pdf/10.1162/isec.2007.32.1.112 by guest on 27 September 2021 A Geriatric Peace? 115 There are a number of studies outside international relations scholarship that examine the scope and various effects of population aging; issues of interna- tional security, however, receive relatively little attention in these works. This article seeks to ªll these important gaps in the literature. My analysis is divided into ªve sections. The ªrst section provides background information on the causes of global aging. The second and third sections examine the eco- nomic and ªscal costs created by this phenomenon and various means of pay- ing these costs, respectively.