The present report presents findings, conclusions and recommendations of an 18-month assessment of the border between the two countries where the Caribbean island of Hispaniola is located - Haiti, the poorest country in the Western Hemisphere and the Dominican Republic, a middle-income country. Along these 380 kilometers, there is the greatest contact between the two groups, and the highest likelihood of tension and conflict. There are also greater opportunities to have a positive impact on the complex relationship between the two countries. The present document provides updated information and emphasizes the close relationship between the transboundary natural resource situation and poverty and the recurrence of recurring social conflicts. In this regard, this report is an indispensable tool that will help to make decisions in the coming years.