Brazil has reduced its diplomatic relations with Argentina to chargé d'affaires level, recalling its ambassador from Buenos Aires indefinitely after Argentine President Javier Milei made a series of personal attacks on Brazilian President Luiz Inácio Lula da Silva. The crisis escalated from a speech Milei gave on July 25 at a political convention in São Paulo, where he called Lula a thief and directed insults at a Brazilian Supreme Court justice; further remarks followed over subsequent days. Brazilian Foreign Minister Mauro Vieira said the ambassador will not return until the attacks stop, while Argentina's government rejected any apology, calling Brazil's move a unilateral decision it regrets but declining to turn political differences into a formal diplomatic incident.