In brief
Argentina's President Javier Milei has issued a stern ultimatum to the United Kingdom, threatening international legal action if the Sea Lion oilfield project—a joint venture between Israeli and British companies—remains active. He has set a two‑week deadline for the venture’s licences to be canceled, accusing the operation of illegally exploiting Argentine resources. Should the deadline be missed, Milei has instructed his Foreign Ministry to initiate arbitration at the International Tribunal for the Law of the Sea, and he has criticized the United Nations for its perceived inaction. The dispute reignites tensions dating back to the 1982 Falklands war, when Britain expelled an Argentine invasion force, and is underscored by the archipelago’s 2013 referendum in which residents overwhelmingly chose to remain a British overseas territory.
Argentina's President Javier Milei has warned the United Kingdom that it faces a legal challenge unless the Sea Lion oilfield project off the Falkland Islands is halted.
In a blunt social‑media statement, Milei set a two‑week deadline for the Sea Lion venture—a collaboration between Israeli firm Navitas Petroleum and British company Rockhopper Exploration—to be dismantled. He accused the partnership of “illegal plunder” of Argentine resources, demanding that the licences held by the companies be surrendered.
If the deadline expires, Milei said he would instruct Argentina’s foreign ministry and legal teams to initiate international arbitration at the International Tribunal for the Law of the Sea in Hamburg. The tribunal, an independent body established under the United Nations Convention on the Law of the Sea, would adjudicate disputes over maritime boundaries and resource rights.
The move comes amid Argentina’s longstanding claim to the Falkland Islands (Las Malvinas in Spanish). After the 1982 war, the islands’ inhabitants reaffirmed their preference to remain a British overseas territory in a 2013 referendum, yet Argentine leadership continues to press for sovereignty, citing the perceived unlawful nature of the British claim.
Milei’s criticism extends to the United Nations, which he described as a “useless organization.” The British defence secretary, Wes Streeting, countered by questioning Argentina’s capacity to recover the islands by force. These competing positions have intensified diplomatic tensions, with the Sea Lion project now at the heart of the dispute.

