Argentina’s President Javier Milei is using Donald Trump’s suggestion that the United States could review its position on the Falkland Islands to press Argentina’s sovereignty claim and threaten action against a planned offshore oil project. Trump has not endorsed Argentina’s claim, while the UK says its commitment to the islands remains unshakeable.
The move comes amid worsening relations between Trump and the UK government over London’s refusal to support US military action against Iran, and as Milei presents Argentina as one of Washington’s closest ideological allies in Latin America.
What Milei announced
In a nationally televised speech on Thursday, Milei said “winds of change” were favouring Argentina’s position. He argued that Washington was considering a change because Argentina was a reliable partner aligned with Western values and located in a strategically important position.
Milei also said any further advance on the Malvinas would be treated as a violation of Argentina’s national security. His measures target the Sea Lion oil project, which is being developed by UK-based Rockhopper Exploration and Israel’s Navitas Petroleum.
What we know now
- The UK has administered the Falkland Islands since 1833; Argentina calls them Las Malvinas and claims sovereignty.
- The Sea Lion project is planned in waters administered by the Falklands, with drilling expected in the coming months and production targeted for 2028.
- Milei announced tougher sanctions could target companies involved in the project and said Argentina would provide new funding for a naval base in Tierra del Fuego.
- Trump has said he reviews every position, but has stopped short of supporting Argentina’s sovereignty claim.
Why the dispute is sensitive
The Falkland Islands are a self-governing British overseas territory in the South Atlantic, almost 13,000km from the UK. Argentina says it inherited sovereignty from Spain, while the UK cites its administration since 1833 and the wishes of the islanders. In a 2013 referendum, 1,513 of 1,517 voters supported remaining a British overseas territory.
The sovereignty dispute led to war in 1982 after Argentina seized the islands. The 74-day conflict killed 649 Argentine and 255 British service members before the UK retook the territory.
What Trump’s remarks mean for US policy
Trump has repeatedly raised the possibility of changing Washington’s position and appeared to suggest he might not assist the UK in a future conflict with Argentina. Asked whether the longstanding US position was under review, he said he always reviews every position.
The comments followed reports that US defence officials had considered using the Falklands issue as leverage to pressure London over military spending and its refusal to support US action against Iran. A leaked Pentagon email in April proposed reviewing US support for the UK’s position for that purpose.
Analysts cited in the reporting said the remarks should not yet be treated as a settled policy change. Christoph Bluth of the University of Bradford said the idea appeared to be linked to pressure on Britain rather than a reassessment of the sovereignty dispute.
How far could the dispute move
The UK has reaffirmed its position. Defence Secretary Wes Streeting called the commitment to the islands “unshakeable”, while a spokesperson for Prime Minister Andy Burnham said the islanders had the right to determine their own future and described the UK commitment as “unwavering”.
Analysts said a formal change in US policy could give Argentina more international leverage and make companies more cautious about investing in Falklands-area oil projects. They also said it would not by itself require Britain to negotiate sovereignty. Buenos Aires could use sanctions and legal pressure against companies involved in Sea Lion, but cannot physically prevent production, according to Bluth.
For Milei, the episode has symbolic and political value even without a formal US decision. Analysts said his close relationship with Trump could allow him to present the Falklands claim as a national cause and use the current alignment as an opportunity ahead of Argentina’s 2027 election.
What happens next
Rockhopper Exploration and Navitas Petroleum are expected to begin drilling the Sea Lion project in the coming months, with oil production expected to begin in 2028.
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