Leaders of the BRICS group of emerging economies meeting for their annual summit had hoped to downplay any differences with the U.S. But even a toned down group proclamation drew the ire of President Trump.

“Any Country aligning themselves with the Anti-American policies of BRICS, will be charged an ADDITIONAL 10% Tariff. There will be no exceptions to this policy,” Mr. Trump said in a Truth Social post. He did not elaborate, nor did he say what BRICS policies he was referring to.