Iranian Foreign Minister and UN chief arrive in Rio for BRICS summit | AFP

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Iranian Foreign Minister Abbas Araghchi and UN Secretary General Antonio Guterres arrive in Rio de Janeiro to attend the BRICS summit, where leaders from major emerging economies are gathering to discuss global trade, financial reform, and geopolitical cooperation. Emerging nations, which represent about half the world's population and 40 percent of global economic output, are expected to decry US President Donald Trump's "indiscriminate" trade tariffs, saying they are illegal and risk hurting the global economy. They are set to unite over "serious concerns" about US import tariffs, according to a draft summit statement obtained by AFP.