Italy and Tunisia reject Libya’s maritime claim

Italy and Tunisia have each sent formal letters to the United Nations rejecting Libya's unilateral declaration of an exclusive economic zone (EEZ) in the central Mediterranean. An EEZ gives a coastal state rights over fish, seabed minerals and energy up to 200 nautical miles from shore, but it is not full sovereignty. Until now, only Greece and Cyprus had formally contested the 2019 Turkey-Libya maritime memorandum, a deal that drew boundary lines Greece and Cyprus say cut across their own claimed waters. Italy and Tunisia bring the opposition to both sides of the sea.

What a UN Protest Letter Does — and Doesn't Do

Under the UN Convention on the Law of the Sea (UNCLOS), opposite or adjacent states cannot settle overlapping boundaries by depositing a line at the UN. Articles 74 and 83 require delimitation by agreement aimed at an equitable outcome (UNCLOS full text). The UN records a state's position but does not endorse it, and a unilateral filing cannot bind states whose rights are affected (UN DOALOS Libya file).

Filing a protest enters non-acquiescence into the official record. It prevents silence from being read as acceptance and signals to energy companies, diplomats and courts that the boundary is contested. According to Pentapostagma, Libya submitted its note on 27 May 2025, Tunisia filed its objection on 19 April 2026 and Italy on 26 May 2026. The exact UN texts have not been independently verified.

The European Council (where EU heads of state set direction) stated in December 2019 that the Turkey-Libya memorandum "infringes the sovereign rights of third States, does not comply with the Law of the Sea and cannot produce any legal consequences for third States" (European Council conclusions). Italy and Tunisia now add their own objections to that earlier EU position, reinforcing it from a different part of the Mediterranean.

Different Countries, Different Legal Ground

The Italian and Tunisian objections rest on distinct cases. Italy reportedly invoked maritime limits linked to the 1985 International Court of Justice ruling on Libya and Malta's continental shelf (ICJ Libya/Malta case), arguing that Libya's claimed boundaries prejudice Italian rights. Tunisia cited its own 1982 ICJ case with Libya (ICJ Tunisia/Libya case), framing its objection as defence of an existing bilateral legal baseline rather than solidarity with Greece or Cyprus.

The two approaches carry different political weights. Rome is objecting in law while keeping channels open. Italy needs Libya for migration management on the central Mediterranean route and for energy partnerships under Meloni's Mattei Plan, which positions Italy as a bridge between North Africa and Europe through gas and infrastructure (Renewable Matter). Tunis objected quietly, with its visible diplomacy emphasising support for a Libyan-led political solution rather than maritime confrontation (La Presse de Tunisie). The legal filing and the diplomatic tone pull in different directions.

The Enforcement Gap

The objections do not cancel Libya's claim. They raise the cost of treating the boundary as settled, but raising cost is not the same as changing behaviour.

Three obstacles limit what protest letters can achieve. The UN does not arbitrate boundary disputes; it only holds the paperwork. Courts need jurisdiction, and Turkey, which backs Libya's maritime position, is not party to UNCLOS and frames its claims through customary international law. Turkey has recently sent its own letters to the UN challenging Greek, Cypriot and Egyptian maritime positions (Greek News on Demand). No court has ruled on the current lines, and UNCLOS dispute-resolution mechanisms cannot be imposed on Ankara without its consent.

The practical test is whether energy companies treat the contested zone as too risky for exploration licences, and whether Libya or Turkey can keep pressing claims through contracts and armed presence off the Libyan coast. Greece, Cyprus, Italy and Malta have deepened maritime cooperation at a recent Rome summit (CDE News), and France and Italy jointly endorsed navigation arrangements that comply with the law of the sea at Antibes on 25 June (Élysée joint statement). These are signals of alignment, not enforcement tools.

The legal file against Libya's claim is growing. The enforcement file is still thin.