The British government on Thursday urged FIFA to investigate Argentina's team after players posed with a banner claiming sovereignty over the contested Falkland Islands. Argentina beat England 2-1 in a World Cup semifinal on Wednesday in Atlanta. During post-match celebrations, Argentine players held a banner handed over by fans in the stands, reading "Las Malvinas son Argentinas" - "The Malvinas are Argentine."

Argentina refers to the Falkland Islands as Islas Malvinas. They were invaded in 1982 under orders from Argentina's then-military dictatorship, triggering a 10-week war won by Britain. U.K. Business Secretary Peter Kyle said the players' behavior was "entirely inappropriate. I expect FIFA to do its investigation thoroughly." FIFA can prosecute Argentina's players and soccer federation because its disciplinary code prohibits at stadiums any "message that is not appropriate for a sports event" including those of "a political, ideological, religious or offensive nature."