Brazil hosts the second and final day of the 17th BRICS Summit in Rio de Janeiro on Monday. (AP video by Lucas Dumphreys)

Brazil plays host to a summit of the BRICS bloc of developing economies Sunday and Monday during which pressing topics like Israel’s attack on Iran, the humanitarian crisis in Gaza and trade

Trump said the U.S. will impose an additional 10% tariff on any countries aligning themselves with the "Anti-American policies" of the BRICS group of developing nations, whose leaders kicked off a summit in Brazil.