Well to be fair, wide sanctions without international reach (like the ones US put on Iran) are a nearly entirely negligible impact.
A small economy like Iran does not need direct access to 100% of the world economy to keep growing. What Iran needs to sell to US, it can do through middlemen, but it doesn't even have to necessarily sell much or at all to US to still turn a profit.
No lone BRICS member has the ability to do decisions for the other ones. Afaik, major decisions are based on majority principle. Members can only opt out of participation but not decide for others.
In this case, Turkey is as a country one of the most evil in the modern world, has a history of betrayal and crime. India will/is not be the only nation rejecting their ascension, for a good reason.
