Introduction: explaining interstate conflict and boundary disputes in post/Cold War Latin America -- Two nations in conflict -- Presidential decision making: the institutional and personal context -- Domestic politics and the push toward war -- The domestic bases for resolution -- Hemispheric diplomacy and the politics of a solution -- Conclusions: lessons learned, progress achieved, and implications for other boundary disputes -- Appendix A. Effective number of parties -- Appendix B. Ecuadorean attitudes toward relations with Peru (november 1992) -- Appendix C. Polling data on border issues (1994/1996)