President Javier Milei announced on Monday that his administration has formally instructed the country’s foreign ministry and legal teams to initiate international arbitration proceedings against the United Kingdom regarding unauthorized offshore oil drilling around the Malvinas Islands. The decisive diplomatic and legal maneuver is specifically targeted at the controversial Sea Lion oil and gas project located within the North Malvinas Basin, an initiative that has long served as a major point of contention in bilateral relations.
In addition to launching the arbitration process, the Argentine government issued a formal ultimatum to the United Kingdom, granting London a strict two-week window to take all necessary measures to halt the start or continuation of hydrocarbon exploitation and exploration activities on the Argentine Continental Shelf. The move marks a significant escalation in Buenos Aires’ strategy to protect its maritime resources and assert its long-standing territorial claims through international legal frameworks.
According to an official communique published across government social media channels on Monday, Argentina has made it clear that if British authorities fail to comply with the two-week deadline, the administration will turn directly to the International Tribunal for the Law of the Sea (ITLOS). Through this international judicial body, Buenos Aires intends to seek provisional measures aimed at safeguarding and preserving its sovereign rights over the disputed maritime areas.
The administration’s official statement heavily grounded its legal and diplomatic rationale in key resolutions passed by the United Nations General Assembly. Specifically, the government cited UN Resolution 2065, a landmark text that formally recognized the existence of a bilateral sovereignty dispute between Argentina and the United Kingdom over the Malvinas Islands. That resolution, adopted decades ago, famously urged both nations to seek a peaceful and definitive solution to the sovereignty question through bilateral negotiations.
Furthermore, the government invoked United Nations General Assembly Resolution 31/49. Under the terms of that resolution, the General Assembly explicitly called upon both Argentina and the United Kingdom to refrain from making unilateral decisions or taking actions that would entail changes to the situation on the ground and in the surrounding waters while the formal diplomatic and political processes recommended by the United Nations remain ongoing. Buenos Aires argues that the advancement of the Sea Lion project by British-linked entities directly violates this foundational principle of international law regarding disputed territories.
Foreign Minister Pablo Quirno reinforced the president’s announcement by releasing a parallel statement through official channels. Quirno reaffirmed Argentina’s unyielding sovereignty claim over the Malvinas Islands, emphasizing that the South American nation will continue to utilize every available diplomatic, administrative, and legal tool within the international system to defend its national position and protect its natural wealth from what the administration has characterized as unlawful extraction.
Complaint Against Thales UK
Alongside the major announcement regarding offshore oil drilling, the Argentine government’s communique detailed a separate, related complaint concerning other unauthorized British activities in the region. The administration revealed that it had recently detected and documented operations carried out by Thales UK Limited along the vital air route operating between the Malvinas Islands and the Chilean city of Punta Arenas.
According to the official findings cited by the government, these flights were conducted utilizing an aircraft registered in the United Kingdom that operated without the required permits or authorizations from competent Argentine civil aviation and government authorities. The operation of foreign aircraft within airspace claimed or regulated by Argentina without prior consent is viewed by Buenos Aires as a direct infringement upon national jurisdiction.
In response to this latest development, the communique stated that the president has issued direct orders to relevant government departments and legal teams to urgently commence administrative proceedings. These actions will include filing formal legal complaints and initiating pertinent diplomatic efforts to address the unauthorized flights and ensure that such occurrences are met with appropriate regulatory sanctions.
The developments reflect an increasingly assertive stance by the Milei administration regarding sovereignty and resource management in the South Atlantic, utilizing international maritime law, United Nations resolutions, and diplomatic pressure to challenge unilateral actions by the United Kingdom in the disputed zone.
Editorial disclaimer: Although the United Kingdom refers to the territory as the “Falkland Islands,” Argentina strongly contests this name. The Buenos Aires Herald uses “Malvinas” to refer to the islands.
With information from Ambito
