Case Analysis of the Entry of China's Ship at Natuna Sea in 2019 Based on International Law

The entry of China’s ships at Natuna Sea in 2019 poses a threat to Indonesia’s sovereign rights. The entry of China’s ships was followed by IUU fishing activities. This writing aims to analyze and find out the regulation of international law and efforts that Indonesia can do against foreign ships that entered the Indonesian EEZ. This writing uses normative legal research method by law and statutory approach. The conclusion of this writing is that Indonesia’s claim to the Natuna sea already has a legal basis because it is included as EZZ in the UNCLOS 1982. The efforts that Indonesia can do against the entry of foreign ships in the EEZ are to propose a settlement through the court of its choice, and take actions such as arrest and detain foreign ships that entered Indonesian EEZ which are accompanied by IUU fishing activities, and follow up with law enforcements