The United Nations Convention on the Law of the Sea (UNCLOS) has been ratified by 168 countries. Among these countries, Indonesia is one of the most notable states concerning compliance with the provisions of the UNCLOS. However, the aggressive actions exhibited by countries seeking to become world hegemonies have resulted in the violation of the Convention. Therefore, this research aims to critically analyse the problems associated with any violations of sovereignty and sovereign rights by foreign research vessels which are conducting commercial and military navigation in Indonesian waters (territorial sea with the archipelagic waters and the inland waters). This research shows that the spirit of the Djuanda Declaration constituting the main principle of the Indonesian Republic is a legal ground for defending the national interest of Indonesia as an archipelagic state. This is the key to maintaining the integrity of sovereignty and national interest.