UK warns Falklands oil project at stake in Hamburg tribunal
Britain says a suspension would cost islanders billions, while Argentina says the drilling breaches a 1976 UN resolution.

Key points
- UK attorney general Ellie Reeves told the tribunal the Falklands could lose billions of pounds if drilling is suspended.
- Argentina asked for a provisional ruling to halt the Sea Lion oil project before further arbitration.
- Argentina says the project breaches a 1976 UN resolution on unilateral action over the islands.
- The hearing in Hamburg runs over two days and continues on Wednesday.
Britain has cautioned that Falkland Islanders could suffer serious harm if Argentina manages to stop an offshore oil scheme, according to The Guardian. Ellie Reeves, the attorney general of England and Wales, put the government’s case before the Hamburg-based body known as Itlos.
Reeves argued that the islands would lose billions of pounds needed for their future. In her words, the outcome would be devastating for residents. The hearing spans two days, with the second session scheduled for Wednesday.
What Argentina is asking for
Buenos Aires has requested interim measures that would halt drilling until a later arbitration concludes. It contends that the Sea Lion scheme carries environmental dangers. Argentina also points to a 1976 United Nations text urging both parties to avoid acting alone while the sovereignty question stays open, and says Britain’s go-ahead for the scheme goes against that text.
Argentina wants London to pledge that drilling will end, so that the existing state of affairs stays in place. Mario Oyarzábal, legal adviser to Argentina’s foreign ministry, told the judges that islanders hold no entitlement to determine sovereignty. He said the oil belongs to the people of Argentina.
Oyarzábal further claimed that revenue from the oil would pay for the military installation that backs Britain’s practical control of the territory. He stated that his government was willing to talk about every element of the matter, including the recent worsening of the disagreement attributed to the UK.
Britain’s counter-arguments
Reeves told the tribunal that Argentina’s real aim was to press its old claim to sovereignty through a procedural request. She stressed that islanders may use their own natural wealth, a right tied to self-determination. In her view, a court focused on maritime law cannot decide who owns territory.
Sir Michael Wood KC, also appearing for Britain, cautioned that the court risked losing members if it went too far by granting interim orders. Such orders, he said, belong to rare situations only. When the Guardian asked whether Britain would follow the ruling, Reeves said she respects the court but would not anticipate its decisions.
The Sea Lion scheme and wider context
The scheme lies in the North Falkland basin and is run by Israel’s Navitas with British partner Rockhopper. Drilling is planned to begin next March, and extraction is expected from 2028 over a 35-year period. It is said to have the potential to roughly double GDP per head on the islands, with about £8bn of cumulative gains over its life.
UK lawyers argued that the chance of a blowout or leak is small and that the operators have measures in place to reduce it. Milei has described the project as illegal. Argentina invaded the islands in 1982, and the fighting cost 649 Argentine service members, 255 British service members and three islanders their lives. This is the first occasion on which core questions about the islands have been argued before an international court. Princess Anne reached Port Stanley on Monday as a sign of support.
Frequently asked questions
Why is Argentina challenging the Falklands oil project?
Argentina says the Sea Lion project poses an environmental risk and breaches a 1976 UN resolution on unilateral action. It has asked the tribunal for a provisional ruling to suspend drilling.
What is the UKu0026#039;s position at the tribunal?
The UK says the islanders have a right to develop their natural resources and that a suspension would cost billions of pounds. It argues the tribunal has no role in settling sovereignty disputes.
When is drilling due to start?
According to The Guardian, drilling in the Sea Lion project is due to start in March next year, with oil extraction from 2028.
Sources
- The Guardian: Falkland Islanders face ‘devastating consequences’ if Argentina blocks oil project, says UK
This article was written with the help of AI from reports by the outlets listed above. See our Editorial Policy. Spotted a mistake? Tell us.



