Argentina’s President Javier Milei has escalated tensions with the United Kingdom, warning of economic sanctions against companies involved in oil exploration near the Falkland Islands.
Milei said his government would introduce legislation to sanction energy firms planning to explore the Sea Lion oilfield, describing the project as a “clear and present danger” to Argentina’s territorial claims.
In a national address from the presidential palace, Milei insisted that the Falkland Islands, which Argentina calls the Malvinas, were “historically and legally” Argentine territory.
“If we do not act swiftly in a few months, they will have the material capacity to access the oil that lies underneath our sea – something that has never happened before,” he said.
The proposed sanctions target Britain’s Rockhopper Exploration and Israel’s Navitas Petroleum, which are expected to begin developing the Sea Lion field off the Falklands within two years.
The field, located about 130 miles from the islands, is estimated to contain 1.7 billion barrels of oil, making it a potentially significant resource.
Rockhopper has described the crude as “highly marketable”, while Navitas has already undertaken infrastructure work in the Falklands, including preparations for a dock, heliport and accommodation for oil workers.
In a joint statement, the two companies said they did not expect the latest developments to materially affect the Sea Lion project or its development timetable.
Milei said the oil exploration could not be allowed to proceed while Argentina’s sovereignty claim remained unresolved.
He also argued that the United Kingdom was acting contrary to a United Nations resolution urging both countries to avoid unilateral actions while the territorial dispute remains unresolved.
The British government rejected Milei’s threats, reaffirming that the Falkland Islands would remain British for as long as the islanders wanted.
Foreign Secretary Ed Miliband said the UK’s position on the islands was “unwavering”, adding that sovereignty should reflect “the overwhelming position of the Islanders”.
Defence Secretary Wes Streeting described Britain’s commitment to the Falklands as “absolute and unshakeable”.
“Milei’s statement overnight tells us more about domestic politics in Argentina than it does about the Falkland Islands,” Streeting said.
Downing Street also reaffirmed that the islands would remain a British Overseas Territory “for as long as the Islanders wish”.
It said the Falkland Islanders’ right to self-determination included the right to exploit their own natural resources.
The islanders overwhelmingly backed continued British sovereignty in a 2013 referendum, with 99.8% voting to remain a British Overseas Territory.
Milei’s announcement comes amid uncertainty over the United States’ longstanding position on the Falklands dispute.
He said US President Donald Trump and Washington were “assessing their historical position” on the islands, arguing that Argentina was a reliable partner and valuable ally.
“There are winds of change in the world that are favourable to our claim,” Milei said.
Trump had earlier suggested that the US position on the Falklands was among several foreign policy positions under review.
Asked whether Washington would support Britain in a potential territorial dispute, Trump said the UK had “not been there to help me” with the US war with Iran.
The remarks have raised questions over whether Washington’s traditional neutrality on the Falklands dispute could change.
Hours before Milei’s address, senior US State Department official Sarah Rogers posted a photograph with the Argentine president alongside the message: “Exciting things are happening in the Western Hemisphere.”
The latest escalation comes more than four decades after Argentina and Britain fought a 74-day war over the Falkland Islands.
Argentine forces invaded the islands in 1982 to assert the country’s territorial claim, prompting Britain to send a military task force that eventually expelled the Argentine forces.
The conflict resulted in the deaths of 255 British military personnel, three Falkland Islanders and 649 Argentine military personnel.
Milei’s latest move also carries domestic political implications, with his popularity reportedly falling to around 34% ahead of Argentina’s next presidential election.
His former vice-president, Victoria Villarruel, a pro-military politician, has criticised his diplomatic approach to the Falklands issue.
The proposed sanctions allow Milei to focus on the immediate issue of oil exploration rather than the broader sovereignty dispute, potentially strengthening his position among Argentines who regard the Falklands claim as a core national issue.
Teslyn Barkman, a former member of the Falkland Islands Legislative Assembly, said Milei’s speech had “probably irked every single Falkland islander”.
Speaking from the capital, Stanley, she said: “We have a burgeoning economy for a small place… we will remain forever British.”
Boluwatife Enome
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