President Donald 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 on Sunday.

President Donald Trump has threatened new tariffs on any nation supporting “anti-American” policies of the BRICS group of emerging economies, as he announced tariff letters would be sent out to scores of countries from Monday,

Conceived two decades ago as a forum for fast-growing economies, BRICS has come to be seen as a Chinese-driven counterbalance to US and western European power.