In brief
Argentina has filed a case at the International Tribunal for the Law of the Sea (ITLOS) to stop the United Kingdom’s Sea Lion oil and gas exploration project 130 miles north of the Falkland Islands. The claim argues the UK acted unilaterally and unlawfully, jeopardizing Argentina’s sovereign rights and marine environment. The UK maintains the licences are lawful, issued by the Falkland Islands government and approved by the foreign secretary. The row comes amid President Javier Milei’s threats of sanctions against firms operating near the islands and a broader dispute over sovereignty that dates back to the 1982 conflict.
Argentina has lodged a formal legal claim with the International Tribunal for the Law of the Sea (ITLOS) to halt the United Kingdom’s exploration of the Sea Lion oil and gas field, situated about 130 miles (209 km) north of the Falkland Islands.
The Argentine government says the UK’s approval of the venture is “illegally” authorised, and the request to ITLOS seeks to prevent any further activity in what Argentina regards as its continental shelf.
President Javier Milei had earlier demanded the scrapping of the Sea Lion project – a joint venture between Israel’s Navitas Petroleum and Britain’s Rockhopper Exploration – and now threatens sanctions if companies continue to operate there.
UK Foreign Office minister Uma Kumaran criticised the claim as part of an “escalating campaign” and announced new protections for businesses under the Protection of Trading Interests Act.
ITLOS, based in Hamburg, will examine whether the licences issued by the Falkland Islands government – which require sign‑off from the UK foreign secretary – are in compliance with international law.
The Sea Lion field is estimated to hold around 1.7 billion barrels of oil and is expected to start production in 2028, potentially generating substantial revenue for the roughly 3,500 people who live on the islands.
Argentina insists its claim aims to preserve its sovereign rights, protect the marine environment and oppose what it views as unilateral British action. The UK, however, insists the exploration is lawful and under the jurisdiction of the Falkland Islands government.
Foreign Secretary Ed Miliband warned that Argentine efforts to intimidate firms operating in the area were unacceptable, calling for companies to be free to make lawful commercial decisions without political coercion.
Milei has also criticised the United Nations, calling it a “useless organisation”, and the UK’s stance is seen by some as a diplomatic response to his sanctions threat and broader sovereignty dispute that dates back to the 1982 conflict.
The legal action marks a new escalation in the long‑standing dispute over the Falkland Islands, known as Las Malvinas in Argentina, as each side seeks to assert its rights over the archipelago’s resources.
