Argentine President Milei made insulting remarks at a Brazilian opposition rally, triggering the most serious diplomatic crisis between the two countries in decades. Milei accused Brazil and others of funding an anti-Argentina campaign without evidence, and insulted Brazilian President Lula and a Supreme Court judge. Brazil subsequently recalled its ambassador to Argentina for consultations.
- At a rally for Brazilian opposition candidate Bolsonaro, Milei accused Brazil, Mexico, and the US Democratic Party of funding an anti-Argentina campaign without evidence.
- Milei insulted Brazilian President Lula as a "thief" and "prisoner," and called a Brazilian Supreme Court judge a "bald scumbag."
- Brazil recalled its ambassador to Argentina for consultations, marking a sharp deterioration in diplomatic relations.