Fans wave Falklands sovereignty banners at Messi's farewell match in Buenos Aires

At Lionel Messi's final appearance for Argentina, held at the Estadio Monumental before a crowd of 85,000, supporters brandished multiple banners proclaiming "Las Malvinas son Argentinas," asserting Argentine claim to the Falkland Islands. The chant mirrors similar displays during the World Cup, notably when players lifted the same banner after beating England, sparking outrage in the United Kingdom. Sir Keir Starmer responded, emphasizing the islands' status and the principle of self-determination for the islanders.

FIFA announced it would investigate the incident, citing its prohibition on political messaging at tournaments, though it has previously overlooked other conflict references. President Javier Milei praised the fans' actions as a valid expression of Argentine sentiment, saying the victory felt complete once England was defeated. The episode underscores the enduring dispute over the islands, which remain a British overseas territory after a 2013 referendum showed overwhelming local support for that status.