"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.

Brazilian President Luiz Inácio Lula da Silva criticized President Donald Trump’s threat of extra tariffs on member countries, declaring “The world has changed. We don’t want an emperor”. Lula rejected any suggestion of U.