<![CDATA[The determination of national territorial boundaries is one of the most important aspects of international law because it is directly related to sovereignty, jurisdiction, national security, and relations between countries. The clarity of territorial boundaries determines the scope of a country's authority in carrying out its governmental functions and exercising its rights based on international law. In the practice of international relations, territorial boundary disputes still often occur in land, sea, and air areas. These disputes generally arise due to differences in interpretation of international agreements, historical factors, economic interests, and unclear international legal norms that govern territorial delimitation. This study aims to analyze the arrangement of the determination of national territorial boundaries according to the provisions of international law and analyze the mechanism for resolving disputes over the territorial boundaries of countries recognized in international law. The research method used is normative legal research with a statutory approach and a conceptual approach. The legal materials used consist of primary, secondary, and tertiary legal materials obtained through literature studies and qualitatively analyzed. The results of the study show that the regulation of national territorial boundaries in international law is sourced from the United Nations Charter, customary international law, international agreements, and the United Nations Convention on the Law of the Sea (UNCLOS) 1982. In addition, the settlement of territorial boundary disputes can be carried out through negotiation, mediation, conciliation, international arbitration, and settlement through the International Court. The existence of these various mechanisms shows that international law has provided adequate instruments in maintaining order and stability in relations between countries]]>
