Countries in post-conflict transitions have to reconcile the development challenge with the additional burden of reconstruction and national reconciliation. This paper first describes the peculiarities of these countries which make them clearly different from those pursuing normal development. Second is a discussion of the challenges that these transitions pose on the countries involved and on the international organizations that support them. Third, the paper illustrates through a discussion of El Salvador—by all standards a success story—how the International Monetary Fund and the United Nations had to adapt to meet the challenges of post-conflict reconstruction. The paper concludes with some policy recommendations.