"Any Country aligning themselves with the Anti-American policies of BRICS, will be charged an ADDITIONAL 10% Tariff," Trump wrote on Truth Social.

"There will be no exceptions to this policy. Thank you for your attention to this matter!" he said.

He made the social media post at a time when the US is preparing to send tariff letters to several nations in the coming days.

Trump's 90-day pause on higher duties is likely to expire on Wednesday.

Trump wrote another post where he said the letters will be delivered on Monday.

The BRICS leaders recently held a meeting over the weekend in Brazil and condemned the US and Israeli attacks on Iran.

Without naming the USA, BRICS leaders said in the joint statement: "We condemn the military strikes against the Islamic Republic of Iran since 13 June 2025, which constitute a violation of international law and the Charter of the United Nations, and express grave concern over the subsequent escalation of the security situation in the Middle East."

"We further express serious concern over deliberate attacks on civilian infrastructure and peaceful nuclear facilities under full safeguards of the International Atomic Energy Agency (IAEA), in violation of international law and relevant resolutions of the IAEA," the statement said.

"Nuclear safeguards, safety, and security must always be upheld, including in armed conflicts, to protect people and the environment from harm. In this context, we reiterate our support for diplomatic initiatives aimed at addressing regional challenges. We call upon the United Nations Security Council to be seized of this matter," it said.

Speaking on the Gaza issue, the statement said: "We recall that the Gaza Strip is an inseparable part of the Occupied Palestinian Territory. We underline, in this regard, the importance of unifying the West Bank and the Gaza Strip under the Palestinian Authority, and reaffirm the right of the Palestinian people to self-determination, including the right to their independent State of Palestine."