His comments came after the BRICS bloc condemned the increase of tariffs without naming Trump. Leaders of the BRICS are meeting in Brazil for the 17th BRICS Summit on July 6-7

"Any Country aligning themselves with the Anti-American policies of BRICS, will be charged an ADDITIONAL 10 per cent Tariff. There will be no exceptions to this policy. Thank you for your attention to this matter!" Trump said in a post on Truth Social on Sunday night

BRICS, originally comprising Brazil, Russia, India, China, and South Africa, expanded in 2024 to include Egypt, Ethiopia, Iran, and the United Arab Emirates, with Indonesia joining in 2025

Trump also said in a separate post that the US will send out "letters" on tariffs and deals to various countries beginning Monday

"I am pleased to announce that the UNITED STATES TARIFF Letters, and/or Deals, with various Countries from around the World, will be delivered starting 12:00 PM (Eastern), Monday, July 7th. Thank you for your attention to this matter! DONALD J TRUMP, President of The United States of America," he said

The BRICS has emerged as an influential grouping as it brings together 11 major emerging economies of the world, representing around 49.5 per cent of the global population, around 40 per cent of the global GDP and around 26 per cent of the global trade

The BRICS summit, hosted by Brazil, brought together leaders from Brazil, Russia, India, China, South Africa, as well as new members Egypt, Ethiopia, Iran, the UAE, and Indonesia