At a Washington gala held on October 14, Argentine President Javier Milei publicly described Brazilian President Luiz Inácio Lula da Silva as a dictator — a remark that came eleven days ahead of Brazil's presidential runoff vote. Speaking to a gathering of roughly 200 attendees, Milei predicted that Flávio Bolsonaro — whom he described as a close personal friend — would defeat Lula da Silva in the coming days, characterising the incumbent Brazilian president as a communist dictator.

During an approximately 20-minute address at the Andrew W. Mellon Auditorium's Official Hispanic Heritage Gala, Milei referred to Lula as a dictator. A leadership and global-impact honour was presented to him by the two co-organising bodies — Latino Wall Street, a finance-focused platform, and La Derecha Diario, an Argentine news outlet. According to Perfil, an Argentine daily, those in attendance included entrepreneurs, investors, and individuals with ties to the Republican Party. Admission prices ran from US$3,000 to US$10,000, according to La Nación, with those present including figures at the helm of the Conservative Political Action Conference (CPAC).

Flávio Bolsonaro was among those in attendance at the gala — against whom Brazilian courts have issued an arrest warrant. Milei, who has described his own political outlook as libertarian, also stated that he expects US President Donald Trump to emerge from the November midterms with a stronger position.

According to one broadcast outlet, Milei pointed to a string of right-leaning electoral outcomes spanning Ecuador, Bolivia, Chile, Peru, and Colombia. Flávio asserted that a higher power would deliver him a further win against Lula da Silva, whom he labelled a communist dictator. Milei went on to describe Lula as a founding figure of the São Paulo Forum — a network bringing together left-wing parties across Latin America — crediting that role to him alongside Fidel Castro.

Milei then acknowledged Eduardo Bolsonaro before directing words of solidarity toward Flávio's father, former president Jair Bolsonaro. Reporting by La Nación and Clarín noted that Milei described the detention of Jair Bolsonaro as an act of political retribution, and that, as his address drew to a close, he vowed to remove the individual he referred to as a "communist dictator."

Luiz Inácio Lula da Silva, now 80, holds the presidency of Brazil under the banner of the Workers' Party — an organisation he helped establish — and has put forward his candidacy for a fourth term in office. Flávio Bolsonaro, aged 45 and the firstborn of former president Jair Bolsonaro, holds a senate seat under the Liberal Party banner and represents a conservative political tradition within Brazil's upper legislative chamber.

According to Estadão, Jair Bolsonaro received a 27-year house-confinement sentence tied to allegations that he orchestrated an effort to overturn the outcome of the 2022 election. Figures from the first round of voting, held on a Sunday in early October, placed Flávio at the top of the ballot with a margin of nearly two points over Lula, according to La Nación.

Taking office in December 2023, Milei has described his political outlook as libertarian, with a stated commitment to reducing the size of government. His alignment with the Bolsonaro family has been a matter of public record, and he took the stage at the Liberal Party gathering in July where Flávio received the nomination.

According to Poder360, Eduardo Bolsonaro — a former congressman and Flávio's younger sibling, currently residing in Texas — joined Milei on stage shortly after the Argentine leader's appearance, and the two greeted each other with an embrace. Separately, on the red carpet, Eduardo told reporters — as Clarín and La Nación noted — that Milei positions himself alongside freedom wherever it exists.

A five-member panel of Brazil's Supreme Federal Court handed Eduardo a custodial term of four years and two months on a coercion charge, with the ruling handed down that June. According to the panel's ruling, he had coordinated with the Trump administration to impose sanctions on Supreme Court justices as a means of influencing the proceedings in his father's coup case. A directive from Justice Alexandre de Moraes, handed down on Thursday, October 8, put the sentence into effect and authorised a warrant for arrest, according to Estadão. Describing the ruling as without clear justification, Eduardo — a US green card holder — maintained it would bring about no meaningful change in practice.

A 50% tariff rate on imports from Brazil took effect on 30 July 2025, with the administration listing the ongoing prosecution of Jair Bolsonaro as one of the factors behind the decision.

Milei characterised Lula as a dictator before shifting his comments toward Trump's presidential campaign. Covering the November vote, he told reporters that a positive outcome for Trump's political direction would carry weight across the Western world, and went on to say — in comments picked up by La Nación, Clarín, and a prominent television network — that not an inch of ground should be yielded in what he described as the effort to reclaim influence across the hemisphere. In a call directed at heads of state across Latin America, he advocated for collective action alongside Trump to build what he described as a unified barrier against socialist governance.

At the Liberal Party convention held in São Paulo on Saturday, 25 July, Milei addressed the gathering and directed comments toward Lula — an exchange that preceded his appearance at the Washington gala. Fortaleza's O Povo reported that he applied derogatory labels — including terms for a convicted criminal and a thief — to Lula, though without stating the name directly. That same Sunday, 26 July, the Brazilian foreign ministry, known formally as Itamaraty, summoned Argentina's ambassador to deliver an official expression of displeasure, while at the same time instructing its own envoy stationed in Buenos Aires to travel back to Brasília for consultations, as reported by O Povo and Correio Braziliense.

Correio Braziliense, a publication based in Brasília, reported that Lula responded to a question on Monday, 27 July, by asking the reporter to clarify which individual was being referred to. According to Clarín, those around Milei take the view that Flávio's performance in the first round was boosted by the July trip. According to La Nación, White House personnel conveyed positive assessments of the visit to their counterparts in Argentina.

Poder360 reported that Milei posted a clip of Flávio arriving at a polling station on the first-round voting day, 4 October. Polymarket traders logged odds of roughly 83 percent in favour of Flávio Bolsonaro and about 16.5 percent for Lula in the runoff, according to platform data captured just after 2 a.m. Eastern time on Thursday, October 15. Over the span of a day, Flávio's valuation edged down roughly three percentage points within a marketplace where trading volume reached approximately US$182 million.

Whether Lula's administration or his party's political operation would respond to Milei's characterisation of him as a dictator — and whether Brazil would once more call in Argentina's ambassador for talks — had not been determined at the time of reporting. Whether Milei planned another trip to Brazil ahead of the 25 October vote also remained an open question. No confirmation came on whether Milei and Trump would hold a face-to-face meeting during the visit, as Trump had not been in Washington on Wednesday. Milei's itinerary called for a Thursday address at the US Chamber of Commerce, with a return flight to Buenos Aires departing that night ahead of Friday, October 16.