Argentina Escalates Falklands Dispute With Sanctions as Trump Questions UK Support

Argentina launched sanction proceedings against 45 people and companies for oil exploration around the Falkland Islands on Friday, September 5, 2026.

President Javier Milei's office announced the move on X, a day after he vowed tougher action and reiterated Argentina's claim to the territory. Milei plans to send a bill to Congress to strengthen Argentina's response to perceived attacks on its sovereignty. He also signed some measures into law through a Necessity and Urgency Decree (DNU), which go into effect immediately but are subject to Congressional review.

Milei's actions follow US President Donald Trump's suggestion that the United States is reviewing its position on the British archipelago. Trump hinted he would not back the UK in a hypothetical fight over the territory, citing a lack of support from London for his war against Iran. Argentina claims the Falklands, referring to them as the Islas Malvinas, despite the islands being a British territory for almost two centuries.

The dispute has lain dormant since the 1982 conflict. Milei stated the Falkland Islands are "Argentine, by history and by right, there is no debate about it." He cited winds of change blowing around the world as favorable to Argentina's claim. A planned oil project, Sea Lion, involving British and Israeli companies, is set to start extractions by March 2028 and holds an estimated 1.7 billion barrels of oil.

The UK government reasserted its unshakeable commitment to the archipelago, with British Defense Secretary Wes Streeting stating Milei's statement tells them more about domestic politics in Argentina. A spokesperson for Prime Minister Andy Burnham said the UK supports the Falkland Islanders' right to develop their natural resources. Argentinian political scientist Professor Vicente Palermo suggested citizens are being dragged into a new Falklands adventure with the US, questioning Trump's claim of withdrawing support the US never gave.

Argentine opposition members criticized Milei's announcements, noting some measures are covered by existing laws and calling his timing opportunistic ahead of the 2027 presidential elections.