I agree that dollar didn't become an international currency because the bankers had foreseen the advantages. Its largely an artifact of WW2 loan repayments and

I agree that dollar didn't become an international currency because the bankers had foreseen the advantages. Its largely an artifact of WW2 loan repayments and stability. But it would be naive to think that they haven't realized the advantage yet and are not actively trying to keep it that way. China is just now getting into this game but not making much headway. Even now some of the oil to India (from Iran especially) is being payed in rupees (albeit priced in dollars).