Argentina's President Javier Milei sparked a serious diplomatic rupture with Brazil after he referred to Brazilian President Luiz Inácio Lula da Silva as a "thief" and a "convict" during a political rally in São Paulo on Sunday. Speaking at the Pacaembú stadium alongside Senator Flávio Bolsonaro — the eldest son of former President Jair Bolsonaro, who is set to formally contest Brazil's presidential election in October — Milei stopped short of naming Lula directly but left little doubt as to his target, describing the Brazilian government as "socialist thieves" and calling Flávio Bolsonaro the only candidate capable of "stopping Lula." Milei also insulted Supreme Federal Court Justice Alexandre de Moraes, the judge who oversaw the proceedings against Jair Bolsonaro, calling him "bald trash." It was Milei's third visit to Brazil since taking office, and he held no meetings with any federal government official during the trip.
Brazil's response was swift and unusually strong. The government recalled its ambassador to Argentina, Julio Bitelli, for consultations — a significant diplomatic gesture that analysts noted was unprecedented in the modern history of relations between the two neighbouring South American nations. Brazil's Foreign Minister Mauro Vieira consulted directly with Lula before authorising the recall, with government sources describing Milei's remarks as a "direct insult." The Workers' Party — the centre-left party founded by Lula — called it "inadmissible" for a foreign head of state to come to Brazil and address its institutions in disrespectful terms. Brazil's Institutional Relations Minister went further, contrasting Brazil's model of "growth with inclusion" with Argentina's austerity-driven economic path. Lula himself responded with restraint, saying he would continue to govern "without anyone's interference" and that Brazil does not accept outsiders "sticking their nose where it doesn't belong."
The judiciary also weighed in. Supreme Federal Court President Luiz Edson Fachin signed an official statement on behalf of the court — an uncommon step — condemning Milei's remarks as a "disrespectful reference" to one of Brazil's highest judges, made on Brazilian soil, and reaffirming the full autonomy of the country's courts. The Argentine government had not issued any formal response to Brazil's statements as of Sunday evening.
The episode carries weight well beyond a personal clash between two leaders. Lula's previous convictions — he was sentenced to 12 years in prison in 2018 in a corruption case, served roughly 18 months, and had all convictions annulled by the Supreme Court in 2021 — have long been a flashpoint in Brazil's polarised politics, and Milei's invocation of them in a campaign context was seen by Brazilian officials as direct interference in the country's democratic process. Jair Bolsonaro, whose son Milei came to endorse, was himself convicted last year and sentenced to more than 27 years in prison for plotting a coup after losing the 2022 election to Lula. With Brazil's October vote approaching, the incident underscores how the ideological rivalry between Latin America's two largest economies is increasingly playing out in the open.