It's all about Russia and China trying to increase their influence in the world through the arrangement of third world nations against first world countries which are lead by USA. I don't know how strong this economical alliance can be, but I fear we get more distant from US and their allies to give preference to russians and chineses. Living in Brazil, personally, I prefer to stay with the occident, because it's still where freedom and individual rights are more respected than in the rest of the world. And if BRICS get stronger, I believe there is a real threat tyranical practices from the east may be applied to us too, even living in an western country.