Good timing. Read this before I saw your post
https://responsiblestatecraft.org/2023/08/24/brics-just-announced-an-expansion-this-is-a-big-deal/
"BRICS, at the conclusion of its summit in Johannesburg, South Africa, announced an expansion with the addition of six new member states — Argentina, Egypt, Ethiopia, Iran, Saudi Arabia, and UAE. This is a big deal. It is the first expansion of the grouping since 2010, when South Africa joined, and the biggest step since the 2015 founding of its New Development Bank.
The expansion will bring in deep-pocketed and energy-rich Gulf states, will enhance Africa and Latin America’s representation, and showcase the great diversity of the member states’ domestic political systems. It also embeds regional rivals Saudi Arabia and Iran into what is starting to look like a broader multilateral institution, which could help cement the two’s growing thaw."