Explained: What is Argentina's 'Las Malvinas' Falkland Islands controversy?

Argentina's World Cup semifinal victory over England has ignited a fresh controversy. Midfielder Giovani Lo Celso displayed a banner claiming the Falkland Islands are Argentine. FIFA rules prohibit political messages during football matches, potentially leading to disciplinary action. The Falkland Islands have been a subject of dispute between Argentina and the United Kingdom for decades. Argentina's Foreign Ministry recently reaffirmed its claim over the islands in an official communiqué.