Look at the pattern arrangement of the numbers...At the summit in Kazan, President Putin was shown a symbolic "BRICS banknote."
The note "represents the collective work being carried out within the BRICS framework."
On the front face of the banknote, the flags of the BRICS founding countries – Russia, China, India, Brazil, and South Africa – can be seen
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I like it, a not so subtle callback to something that strikes fear into the enemies.