US president Donald Trump has threatened to impose an additional 10 per cent tariff on any nation aligning themselves with the “Anti-American policies” of the Brics group of developing countries as their leaders met in Brazil on Sunday.

Trump said the U.S. will impose an additional 10% tariff on any countries aligning themselves with the "Anti-American policies" of the BRICS group of developing nations, whose leaders kicked off a summit in Brazil.

“Any Country aligning themselves with the Anti-American policies of BRICS, will be charged an ADDITIONAL 10% Tariff. There will be no exceptions to this policy. Thank you for your attention to this matter!” Trump said in a post on Truth Social.