Falklands tensions rise as Argentina threatens Britain with legal battle

Argentine President Javier Milei has warned Britain he will launch international legal proceedings if the Sea Lion oil exploration and drilling project near the Falkland Islands — which Argentina calls the Malvinas — is not halted. In a social media post, Milei gave the British government two weeks to stop the project, developed by the British and Israeli companies Rockhopper Exploration and Navitas Petroleum.

The Argentine president said that, if the project is not stopped within that deadline, he has instructed the country’s Foreign Ministry and legal teams to initiate international arbitration proceedings against Britain. Milei has described the project as an illegal exploitation of the territory’s natural resources. He also warned that Argentina could take the case to the International Tribunal for the Law of the Sea.

The companies developing the project, meanwhile, say they hold valid licences issued by the Falkland Islands authorities. The Sea Lion project lies about 209 kilometres from the islands and the area is believed to hold around 1.7 billion barrels of oil. The companies plan to begin oil extraction within two years.

The new clash comes at a time when relations between Argentina and Britain remain strained over the Falklands sovereignty dispute. In 1982, Argentina invaded the islands, triggering a 74-day war with Britain. British forces retook control of the territory. The conflict claimed the lives of 255 British soldiers, 649 Argentine soldiers and three islanders. In a 2013 referendum, 99.8% of Falkland residents voted to continue the islands’ status as a British overseas territory. The sovereignty dispute remains unresolved, while the oil project is adding to tensions between the two countries.