Argentina is preparing criminal action against companies involved in the Falkland Islands’ Sea Lion oil development, escalating its sovereignty dispute with Britain as the project moves closer to production.

By yourNEWS Media Newsroom.

Argentina announced Monday that it will file a criminal complaint against companies involved in oil development near the Falkland Islands, opening a new legal front in its longstanding sovereignty dispute with Britain as plans advance to exploit the territory’s offshore petroleum reserves.

President Javier Milei’s office said the complaint will target several companies, including entities associated with Israeli oil producer Navitas Petroleum, over exploration and development carried out under licenses issued by what Argentina described as “the illegitimate government of the United Kingdom.”

The move follows the Falkland Islands government’s approval of Navitas Petroleum’s development of the Sea Lion oilfield, a large offshore resource that has moved steadily closer to production and brought the economic stakes of the territorial dispute into sharper focus.

The Argentine government portrayed the planned criminal filing as part of its continuing claim over both the islands and the surrounding waters.

The complaint “constitutes a concrete action to protect natural resources and safeguard the sovereignty of the Argentine Republic” over the Falkland Islands “and the corresponding maritime and insular areas, as they are an integral part of the national territory,” the president’s office said.

“The defense of sovereignty must be exercised through all the legal and institutional tools available to the national government in order to prevent third parties from carrying out activities involving resources belonging to the Argentine Republic.”

The Falkland Islands lie in the South Atlantic approximately 300 miles east of Argentina. Britain has controlled the territory since 1833, while Argentina maintains that the islands — known there as the Malvinas — belong to it.

That dispute has persisted for generations, but the development of Sea Lion has added a major commercial dimension. Rockhopper Exploration, Navitas Petroleum’s British partner, discovered the oilfield in 2010.

Milei had already increased pressure over the project last week, threatening sanctions against companies involved in extracting oil around the islands and reaffirming Argentina’s sovereignty claim.

“The islands are ours, they were taken from us and they are indispensable to Argentina in the coming decades,” Milei said. “It’s our obligation.”

His comments came shortly after U.S. President Donald Trump suggested during an interview with GB News that the United States might not support Britain in a future Falklands conflict. Trump also criticized Britain for not supporting the United States in its war with Iran.

Rockhopper rejected Argentina’s challenge to the project following Milei’s earlier comments, maintaining that its licenses had been lawfully issued by the Falkland Islands government.

Britain likewise reiterated that it considers the sovereignty question settled according to the wishes of the islands’ residents.

“The U.K.’s position on the Falkland Islands is unwavering,” British Foreign Secretary Ed Miliband said.

“The Islands are British and will remain so because that is the overwhelming position of the islanders,” he added.

Miliband was referring to the Falkland Islands’ 2013 referendum, in which 99.8% of participating voters chose to retain the territory’s status as a British Overseas Territory.

Neither Britain nor Rockhopper had responded to Argentina’s newly announced criminal complaint.

The dispute has also drawn intervention from within Israel because Navitas Petroleum is an Israeli company.

Israeli National Security Minister Itamar Ben-Gvir said he would press Prime Minister Benjamin Netanyahu to recognize Argentina’s sovereignty claim over the Falklands.

“It’s time for the State of Israel to publicly recognize that the Malvinas Islands are Argentine territory under occupation, which the British violently steal from the Argentine people,” Ben-Gvir said on X.

“The British are not content with merely occupying the territory; they also carry out oil drilling there and steal the money from the Argentine people.”

The competing claims have previously resulted in war. Argentina invaded the islands in 1982, triggering a conflict with Britain that ended with British forces retaking the territory.

More than four decades later, the sovereignty dispute remains unresolved between the two governments. The approaching development of the Sea Lion field has now broadened that confrontation beyond control of the islands themselves to include the ownership and exploitation of potentially valuable offshore energy resources.

Argentina’s planned criminal complaint marks its latest attempt to challenge those activities through domestic legal and institutional channels while Britain and the Falkland Islands government continue to maintain that the oil licenses were lawfully granted.

Original article