Brazil is playing 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 tariffs imposed by U.

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.

BRICS leaders set to discuss key global political issues in Rio de Janeiro, but questions over the bloc’s cohesion arise as Chinese President Xi Jinping and Russian President Vladimir Putin opt to skip the summit.