EEZ Boundary Disputes and Contract Risk: What the Vanuatu v France ICJ Case Means for Global Businesses

The ICJ Filing and What Is Actually at Stake

Vanuatu has formally filed an application with the International Court of Justice asking the court to affirm its sovereignty over disputed islands in the South Pacific and to draw a binding maritime boundary between its territory and the French territory of New Caledonia. The case sits at the intersection of customary international law, the UN Convention on the Law of the Sea, and post-colonial territorial settlement, making it one of the more complex state-versus-state proceedings the ICJ has seen from the Pacific region in recent years.

For general counsel and law firms advising clients with commercial interests in the Pacific, the temptation is to treat this as a geopolitical curiosity. That would be a mistake. Exclusive economic zone boundary disputes have a direct and under-appreciated effect on the enforceability, licensing validity, and governing-law assumptions embedded in a wide range of commercial agreements.

What an Exclusive Economic Zone Is and Why It Matters Commercially

An exclusive economic zone, or EEZ, extends up to 200 nautical miles from a coastal state's baseline and grants that state sovereign rights over the exploration, exploitation, and management of natural resources within that zone. When two states share overlapping maritime geography, as Vanuatu and New Caledonia do, the outer boundary of each EEZ becomes a contested line with real commercial consequences.

Fishing licences, seabed mining concessions, hydrocarbon exploration permits, cable-laying agreements, and even certain shipping route arrangements are all issued by reference to which state's regulatory authority applies at a given set of coordinates. If that authority is disputed, every downstream contract that depends on the licence or permit issued by one of the claimant states carries latent legal risk. This is not theoretical: commercial operators in the South China Sea have spent years managing exactly this kind of jurisdictional uncertainty across their contract portfolios.

Who Is Bound and When

The ICJ proceedings themselves bind only the parties: Vanuatu and France. However, an eventual judgment on sovereignty and EEZ delimitation would constitute authoritative international law that shapes how third-party arbitral tribunals, national courts, and regulatory bodies interpret competing licensing regimes in the affected area.

There is no fixed timetable for ICJ proceedings. A case of this scope, involving questions of sovereignty, post-colonial treaty interpretation, and UNCLOS delimitation methodology, could take anywhere from five to ten years to reach a merits judgment, assuming France accepts jurisdiction. France has historically engaged with ICJ proceedings, but that acceptance is not automatic under all bases of jurisdiction. Businesses operating in the disputed zone should treat the proceedings as a long-duration risk factor rather than an imminent regulatory event.

The Contract Changes This Dispute Forces on Operating Businesses

GCs advising companies with assets, licences, or operational activities in the waters between Vanuatu and New Caledonia should audit their agreements along the following lines.

Governing law and jurisdiction clauses. Any contract that specifies the law of either Vanuatu or France (as the metropolitan power behind New Caledonia) as the governing law should be reviewed to confirm which version of that law applies to offshore activities and whether a change in territorial attribution could trigger a governing law ambiguity.

Regulatory licence conditions. Fishing agreements, exploration licences, and environmental permits often contain conditions that are automatically suspended or terminated if the issuing authority loses jurisdictional competence. Counsel should map each licence to the coordinates it covers and flag any that fall within the contested zone.

Force majeure and material adverse change provisions. A shift in EEZ attribution following an ICJ ruling is unlikely to constitute force majeure under most standard definitions, because it is a foreseeable legal event rather than an unforeseeable physical one. However, well-drafted MAC clauses that reference changes in applicable law or regulatory regime could be triggered. Parties negotiating new agreements now should consider inserting specific language addressing boundary determination risk.

Assignment and change-of-control provisions. If a concession or licence becomes unenforceable because its issuing authority is later found to lack jurisdiction, an assignment of that concession to a third party could expose the assignor to warranty liability. Representations that the assigned asset is in good standing require careful qualification in a disputed-zone context.

Lessons from Comparable Maritime Boundary Proceedings

The Vanuatu-France dispute is not the first of its kind, and the commercial sector has generated instructive precedents from other proceedings. The Nicaragua v Colombia ICJ judgment of 2012 redrew EEZ boundaries in the Caribbean in ways that invalidated several existing fishing licences and required renegotiation of bilateral resource-sharing arrangements. As one legal analysis of that period noted, operators who had already built contractual flexibility into their licence-dependent agreements fared considerably better than those who had assumed boundary stability.

The lesson for the Pacific context is straightforward: businesses should not wait for a final judgment. The filing of the ICJ application is itself sufficient notice that boundary stability cannot be assumed, and that is the moment to begin contract triage.

A Practical Checklist for General Counsel

Given the long duration of ICJ proceedings and the breadth of commercial interests that could be affected, the following steps represent a proportionate response to this development at the present stage.

First, identify all agreements governed by or referencing either Vanuatu or New Caledonian regulatory authority where performance depends on activities conducted offshore. Second, review force majeure, MAC, and regulatory-change clauses in those agreements for their responsiveness to a boundary-determination event. Third, flag any assignments, renewals, or new negotiations involving assets in the disputed zone and ensure that counterparty representations are appropriately qualified. Fourth, consider whether any insurance coverage, including political risk insurance, addresses loss of licence value arising from a change in jurisdictional attribution. Fifth, monitor ICJ procedural developments, particularly France's response to jurisdiction, because that response will significantly affect the probable timeline and litigation scope.

Adira's contract intelligence layer can assist teams in locating governing-law provisions, licence-dependency clauses, and force majeure language across large contract portfolios, making this kind of targeted audit considerably faster to execute than a manual review.