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A review essay on Ronald Findlay, Lars Jonung and Mats Lundahl, eds. Bertil Ohlin: Centennial Celebration (1899–1999). Cambridge, MA: MIT Press, 2002. Pp. xvi, 546. $60.00. The Swedish economist Bertil Ohlin was born in 1899 and died in 1979. Less than half of his professional life he spent as a full time academic scholar in economics. He was a student at the University of Stockholm and was supervised by his teachers, Gustav Cassel and Eli Heckscher. In 1922, Ohlin presented his licentiat thesis where he set out the ideas later conceptualised as the Heckscher-Ohlin model. Two years later, in 1924, he took his doctoral degree under Cassel with a dissertation simply called Handelns teori (The Theory of Trade). A longer version of this dissertation was later published in English as Interregional and International Trade (1933). This work made him a famous trade theorist in a line of tradition going back to Ricardo and Torrens. Paul Samuelson in 1941 coined and immortalised the term “the Heckscher-Ohlin theorem” which he and Wolfgang Stolper developed further in a famous article in the Review of Economic Studies (1941) entitled “Protection and Real Wages.” Already at the age of 26 the bright young man Ohlin became a professor in economics at the University of Copenhagen and five years later he was appointed to a chair in the same subject at Handelshogskolan (The Stockholm School of Economics) in Stockholm.

This chapter presents a general equilibrium model that embeds the issue of national security within a two-country Heckscher–Ohlin model of international trade. “National security” is defined as a public good that is an increasing function of a country's own defense expenditure and a decreasing function of the other country's defense expenditure. Defense is a non-traded public good produced by capital and labor, along with two tradable private goods in each country. The model is solved as a Nash equilibrium in defense expenditures and a Walrasian equilibrium for the two traded goods and the factors of production. It is shown that opening to international trade raises defense expenditures in each country since national security is a normal good in each of them. If defense is more capital-intensive than both tradable goods then trade lowers the cost of defense for the labor-abundant country and raises it for the capital-abundant country.

The collection of essays in this volume provides fairly comprehensive analyses of contemporary theoretical and policy issues in international trade. As technological revolution eliminates communications costs and the countries gear towards more open trade regimes through negotiations at the WTO, the world effectively gets smaller. The evolution of research in trade theory and policy has closely followed the trends in global economy. Issues such as how trade affects distribution of income across and within nations, generates resources for growth, leads to bilateral and multilateral cooperation and conflicts, and many others have been picked up and analyzed systematically in various chapters of this volume. Before we go into the details of the relevant sections and constituent chapters, it is worthwhile to emphasize two special features of this volume.