Vanuatu Files ICJ Case Against France Over Pacific Island Sovereignty
Vanuatu filed an ICJ application against France over Matthew and Hunter Islands sovereignty and maritime boundaries.
Why it matters: This dispute affects maritime boundaries and resource rights in the Pacific, impacting international law and jurisdictional conflicts relevant to legal professionals.
- On August 31, 2026, Vanuatu filed a case at the ICJ against France over sovereignty of Matthew and Hunter Islands.
- The islands lie about 300 km east of New Caledonia and are uninhabited volcanic territories.
- Vanuatu claims sovereignty since its 1980 independence; France annexed the islands to New Caledonia in 1976.
- Bilateral talks in 2018, 2019, and 2025 failed, leading Vanuatu to seek judicial resolution.
On August 31, 2026, Vanuatu officially submitted an application to the International Court of Justice (ICJ) seeking affirmation of its sovereignty over the uninhabited Matthew (Umaenupne) and Hunter (Umaeneg/Leka) Islands, along with delimitation of maritime boundaries with France's territory of New Caledonia.
The two volcanic islands are approximately 300 kilometers east of New Caledonia and southeast of Vanuatu, both uninhabited but strategically important for maritime jurisdiction, including fishing rights and seabed resources. Vanuatu has asserted sovereignty since gaining independence from joint British and French rule in 1980, emphasizing cultural ties and territorial integrity.
France, however, has administered the islands since their annexation in 1976 as part of New Caledonia. Multiple bilateral negotiations in 2018, 2019, and 2025 failed to resolve the sovereignty dispute, prompting Vanuatu to turn to judicial means.
Deputy Prime Minister Johnny Koanapo, leading Vanuatu’s negotiations, underscored the shift towards the ICJ as "the clearest pathway to a lasting and internationally recognised resolution." He also highlighted the cultural bonds between southern islands of Aneityum, Futuna, and Tanna and the disputed islands.
The ICJ has acknowledged receipt of the application and notified France, but proceedings depend on France consenting to the Court's jurisdiction. This case underscores the complexities of territorial claims within the Pacific and holds significance for international law practitioners monitoring maritime sovereignty issues.
By the numbers:
- August 31, 2026 — Date Vanuatu filed ICJ application
- 300 kilometers — Distance of Matthew and Hunter Islands east of New Caledonia
- 2018, 2019, 2025 — Years bilateral negotiations between Vanuatu and France failed
Yes, but: France's response and consent to ICJ jurisdiction are pending, so no proceedings will occur without its agreement.
What's next: The ICJ awaits France's acceptance of jurisdiction; without it, legal proceedings cannot proceed.