The president-elect's threat comes just days after he threatened big tariffs on Mexico, Canada and China. Experts warn of higher prices.

His threat was directed at countries in the so-called BRIC alliance, which consists of Brazil, Russia, India, China, South Africa, Egypt, Ethiopia, Iran and the United Arab Emirates.

President-elect Donald Trump threatened to impose 100% tariffs on a bloc of nations known as BRIC if they take actions to undermine the U.S. dollar.