U.S. President Donald Trump warned early Monday that countries that support of BRICS nations -- Brazil, Russia, India and China -- would be slapped with an additional 10% tariff when across-the-board

The Trump administration announced that some deals had been made with trading partners, and letters would be sent out on Monday notifying other countries of higher tariffs starting in August.

Developing nations participating in the BRICS summit on Monday brushed away an accusation from U.S. President Donald Trump that the bloc is "anti-American," as he threatened them with additional 10% tariffs.