Argentina has taken its fight over Falkland Islands oil to an international court, officials said on September 28 and 29. President Javier Milei set a two-week deadline for legal action over drilling in waters near the disputed islands. Argentina filed its case at the International Tribunal for the Law of the Sea in Hamburg. The dispute centres on the Sea Lion field, operated by Rockhopper and Navitas. The field holds an estimated 1.7 billion barrels of oil. First oil is expected in March 2028. Britain controls the Falklands, which Argentina claims as the Malvinas. The two countries fought a war over the islands in 1982. Oil development has long been a flashpoint between them. Argentina says drilling violates its sovereignty. The court case could take years to resolve. Its outcome may shape the future of energy projects across the South Atlantic. Britain has not yet responded formally to the filing, and drilling work at Sea Lion continues in the meantime.