BUENOS AIRES, Argentina (AFP) — Lionel Messi will captain Argentina at the World Cup, national coach Lionel Scaloni announced Thursday as he unveiled his 26-man squad. Messi, 38, had not previously confirmed he would play in what will be a record-breaking sixth tournament for the Argentine superstar. But it had been widely assumed the eight-time Ballon d'Or winner would again lead Argentina, four years after lifting the trophy in Qatar.