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Firstly, then why do you keep on writing your gibberish if you don't understand anything?
BRICS is about getting the world out from under the corrupt US banking system. Putin doesn't have to go. He can send proxies.
And why do you think the banking system which is alledgedly being created by the members of BRICS is going to be less corrupt than the system implemented by USA and the European Union, though?
There are countries within the BRICS who keep reckless economical policies within their own countries, not even mention they also have autocratic ways to govern over their people, the system created by some BRICS FIAT could even be less transparent and less secure than what the USA and it's allies currently have with SWIFT.
Also, China (which is one of the most important members of BRICS) does not have a real interest on trashing their Chinese Yuan in order to push some theorical BRICS fiat or currency, they like the control they have over their Fiat.
By the way, I doubt that hypothetical currency will be backed with anything, not even gold, silver or oil, it will be just based on trust, as the US Dollar is.
Will BRICS fiat be backed by gold and silver that you can simply trade for? We aren't that far into it yet.
When you look at Russia and China, they set forth in their documents that they are out to take the world over. When you look at US and Western docs, they say freedom for everybody. Then the Western banking system screws everybody.
What do you want? Honesty or lies?