Argentine Judge Orders Halt to Falklands Oil Project as UK Tensions Simmer

An Argentine federal judge has ordered two foreign energy companies to suspend work on an oilfield off the Falkland Islands, adding a legal dimension to a sovereignty dispute that President Javier Milei has pushed back into the spotlight in recent weeks.

The injunction, issued by Judge Mariel Borruto, applies to the Sea Lion project, located about 220 kilometres north of the British-administered archipelago in the South Atlantic. It bars drilling, offshore installations and port construction until Argentine authorities complete an environmental review and reach a decision.

The order names Israel's Navitas Petroleum and Britain's Rockhopper Exploration. Both companies have already signalled they intend to continue with the project despite warnings of tougher sanctions from Buenos Aires. Rockhopper declined to comment, while Navitas did not immediately respond to a request for comment.

In practice, the ruling may have limited effect. The judge acknowledged that enforcement depends on international cooperation and on how the two companies choose to act. Commercial oil production at Sea Lion is expected to begin in 2028.

The project carries high stakes for the roughly 3,500 residents of the islands, whose economy has long relied on fishing, and for Argentina, which calls the territory the Malvinas and regards its oil resources as its own. The country's claim to the islands, about 480 kilometres off its coast, is written into its constitution and enjoys broad political support at home.

Recent comments by U.S. President Donald Trump, an ally of Milei, have introduced fresh uncertainty. Citing Britain's stance on his campaign against Iran, Trump has suggested Washington could revisit its traditionally neutral position on sovereignty. Speaking in Dublin, he questioned whether Britain would be willing to retake the islands as it did after Argentina's 1982 invasion.

Milei has pointed to what he described as "winds of change," using a national address to announce measures against companies working around the islands. His government is preparing legislation to widen sanctions and has filed three criminal complaints against Navitas and nine other companies and their executives, accusing them of operating without Argentine authorisation. The practical impact of those charges remains unclear.

Britain has rejected Argentina's legal campaign, maintaining that the islanders should decide the territory's status and pointing to a 2013 referendum in which they voted overwhelmingly to remain British. In guidance aimed at reassuring businesses, the British government said Argentine domestic law does not apply within the islands.

The injunction stems from a separate civil suit brought by environmental lawyers and veterans of the 1982 war, who cite risks including chemical pollution, underwater noise, shipping traffic and possible oil spills. Borruto wrote that the risk was neither hypothetical nor remote, noting that infrastructure work had already begun.