"Any Country aligning themselves with the Anti-American policies of BRICS, will be charged an ADDITIONAL 10% Tariff," Trump wrote on social media. BRICS members account for about half the world's population and 40 percent of global economic output.

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.

China said BRICS does not seek confrontation or target any country after U.S. President Donald Trump threatened a new 10 percent tariff.