By Lisandra Paraguassu RIO DE JANEIRO -Leaders of the growing BRICS group of developing nations were set to gather in Rio de Janeiro on Sunday, calling for reform of traditional Western institutions while presenting the bloc as a defender of multilateralism in an increasingly fractured world.

BRICS leaders descended on sunny Rio de Janeiro Sunday, ready to issue a dark warning that US President Donald Trump's "indiscriminate" import tariffs risk hurting the global economy.

At the upcoming BRICS summit in Rio de Janeiro, leaders from Brazil, Russia, India, China, and South Africa are set to address Donald Trump's controversial tariffs, aiming to present a united front despite internal divisions over Middle Eastern conflicts.