Argentine President Javier Milei has instructed his foreign ministry to begin international arbitration against Britain over the Sea Lion oil project north of the Falkland Islands (Malvinas), giving London two weeks to halt activity before Argentina seeks provisional measures from the International Tribunal for the Law of the Sea in Hamburg. The UK holds that its sovereignty is not in doubt and that offshore hydrocarbon activity is governed by local law, and it made no specific reply; the project's backers, Navitas and Rockhopper, still expect first production in the first half of 2028. The move matters because past tribunals under the UN Law of the Sea Convention, such as in the Chagos and Crimea cases, declined to rule on disputes involving territorial sovereignty, and no formal arbitration notification has yet been recorded.