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Territorial sea, as defined by the 1982 United Nations Convention on the Law of the Sea, is a belt of coastal waters extending at most 12 nautical miles (22.2 km; 13.8 mi) from the baseline (usually the mean low-water mark) of a coastal state. The territorial sea is regarded as the sovereign territory of the state, although foreign ships (military and civilian) are allowed innocent passage through it, or transit passage for straits; this sovereignty also extends to the airspace over and seabed below. Adjustment of these boundaries is called, in international law, maritime delimitation. (Wikipedia)

On May 9, 2018, the Conciliation Commission in the maritime boundary dispute between Timor-Leste and Australia issued its report, marking the conclusion of the first-ever conciliation proceedings under the United Nations Convention on the Law of the Sea (UNCLOS). (The Diplomat)