Argentina’s 2-1 semi-final victory over England in Atlanta was immediately followed by a gesture that shifted the narrative from sport to sovereignty. As players celebrated on the pitch, Giovani Lo Celso and Lisandro Martínez held aloft a supporters’ banner reading “Las Malvinas son Argentinas” — the Falklands are Argentine. The image, captured in the aftermath of a tense match that saw four yellow cards, triggered a formal review by FIFA, whose disciplinary code prohibits political messages at its tournaments.

Viewed from Washington, the display fell under constitutional protections. Andrew Giuliani, executive director of the White House task force for the 2026 World Cup, told a press conference on Friday that the players had “the ability, the opportunity to be able to make those statements” on US soil, citing the First Amendment. The remarks came during a briefing otherwise focused on security and air quality concerns, and they marked a departure from the United States’ longstanding neutrality on the Falklands sovereignty dispute. The State Department later clarified that its policy on the islands “remains unchanged”, while Giuliani’s intervention was interpreted in some quarters as a nod to the geopolitical alignment between the Trump administration and Argentine President Javier Milei.

London responded with a statement from Downing Street that “the World Cup might not be ours, but the Falkland Islands definitely are”, and Business Secretary Peter Kyle called the banner an “egregious violation” of FIFA rules. The Falkland Islands government said it was “disappointed but not surprised” and urged the governing body to apply sanctions, adding that islanders did not wish to be “used as a political football”. The territory, which voted overwhelmingly to remain British in a 2013 referendum, remains at the centre of a sovereignty claim that Buenos Aires has pursued through diplomatic channels since the 1982 war.

In Argentina, the banner was framed as a legitimate expression of national sentiment. President Milei described it as “perfectly valid and legitimate”, while stressing that the recovery of the islands should be pursued through diplomatic means. Vice-President Victoria Villarruel posted a video of Argentine soldiers on social media, writing that the Falklands are “in our blood and our hearts”. Foreign Minister Pablo Quirno had already filed a diplomatic protest over the passage of a British warship near the islands, underscoring the broader context in which the football celebration unfolded.

FIFA confirmed that its independent disciplinary committee is assessing match reports before deciding whether to take steps. The body has previously fined Argentina for an identical banner in 2024, and it banned Spanish players for a Gibraltar chant after Euro 2024. The review will run in parallel with preparations for Sunday’s final, where Argentina will face Spain in a contest that now carries an added diplomatic charge.