Argentina players unfurled a banner proclaiming "The Falklands are Argentinian" in the immediate aftermath of their 2-1 victory over England in the World Cup semifinals. The demonstration by players Lisandro Martinez and Giovani Lo Celso, later joined by teammates, has reignited historical tensions surrounding the sovereignty of the South Atlantic islands.

The match, held in Atlanta, Georgia, saw England take an early lead through Antony Gordon. However, Argentina secured their place in the final with two late goals from Enzo Fernandez and Lautaro Martinez.

The disputed territory, known as Las Malvinas in Argentina, was the subject of a 1982 war between the United Kingdom and Argentina, which resulted in 255 British servicemen and 907 people in total losing their lives. FIFA had previously banned Argentinian flags featuring the Falklands due to their political significance.

Argentinian Foreign Minister Pablo Quirno stated prior to the match that the population of the islands had been "artificially implanted" and that a 2013 referendum, in which 99.8% of Falklanders voted to remain under British rule, was illegitimate. The sentiment was echoed by the players chanting "for the Malvinas" before the game.

British Prime Minister Keir Starmer and Foreign Secretary Yvette Cooper have rejected these claims and sought to de-escalate the situation. Cooper told The Telegraph, "We're looking forward to the football."

This incident echoes past sporting confrontations between the two nations, most notably Diego Maradona's controversial "hand of God" goal in the 1986 World Cup quarter-final, which Argentina won 2-1 before going on to claim the trophy.

Despite the loss, King Charles III and outgoing Prime Minister Sir Keir Starmer offered commiserations to the England team, praising their "passion" and "energy" throughout the tournament. England's appearance in the semifinals was their fourth in World Cup history, and their most significant since 1966.