Notes
The opinions in this paper are those of the authors and should not be attributed to the U.S. government. Smith is grateful to the Department of Economics, University of Colorado at Boulder for its hospitality during 1997–1998, when most of the work on this paper was done, and to the ESRC for financial support under research grant R00235685 on models of the arms trade. We are also grateful to Mary Ann Casey, Yongmin Chen, Saadet Deger, Paul Levine, and Somnath Sen for comments on an earlier draft.