Two officials from G20 countries confirmed that Buenos Aires was obstructing negotiations on the text of the final G20 communiqué, a few days after Argentina. withdrew its delegation from the COP29 climate negotiations in Azerbaijan.

At the presidential palace in Buenos Aires, the two leaders greeted each other warmly on Sunday, with Milei giving a double thumbs-up and Macron greeting photographers and giving a thumbs-up.

Discussions ahead of the summit in Brazil were already complicated by disagreements between Western countries, emerging economies, China and Russia, on a range of issues, including climate finance and Russia’s invasion of Ukraine.

In a video shot aboard the presidential plane, the French president said Saturday he would discuss trade, agriculture and G20 summit with Milei. “We don’t always think the same thing on many subjects, but that’s it’s always important to talk” Macron said.

Macron also said he would discuss “the defense of agriculture and our farmers”, in reference to negotiations on the Mercosur mega-trade deal between the EU and South American countries. France is firmly opposed to this agreement, which could be sealed in the coming weeks.

Milei, who has pledged to radically reform his country, was the first foreign leader to meet Trump at his Mar-a-Lago residence since the Republican won the November 5 US election. During his visit to Florida, Milei called for an “alliance” with the United States, Italy and Israel to protect “Western heritage.” according to AFP.

Argentina also warned that it was considering leaving the Paris climate agreement.

Meanwhile, tensions appear to be growing between the United States and Brazil. On Saturday, Brazil’s first lady, Janja Lula da Silva, swore at tech billionaire Elon Muskwho was tasked with leading the new U.S. Department of Government Effectiveness. “I’m not afraid of you, fuck you, Elon Musk!” the president’s wife said at a G20 social event.