Donald Trump’s election as US president is already threatening international initiatives on climate change and taxation, as diplomats from the world’s richest nations struggle to maintain a shaky consensus on the eve of a G20 summit in Brazil.

Argentina and its President Javier Milei, a close ally of Trump, threatened to block a joint communique set to be endorsed by G20 leaders at the Rio de Janeiro meeting that begins on Monday, because of objections related to taxation of the super-rich and gender equality, people briefed on the negotiations told the Financial Times.

Diplomats were racing to reach a final consensus on statements related to climate finance and geopolitical issues such as Russia’s war against Ukraine, the people said, as leaders began arriving in the Brazilian city.