As world leaders grapple with the U.S. withdrawal from the Paris Agreement, Brazil, the host of this year’s COP30 global climate summit, sees an opportunity to amplify the voices of developing nations in what will be a fierce dispute over who will pay for the global transition to cleaner energy sources.

Brazil has chosen a veteran diplomat for the top job at the UN COP30 climate summit as the country attempts to balance action on global warming with the US’s exit from the Paris climate agreement under President Trump.