Remember all that pooh-poohing when the gulf states were talking about their own currency? About how silly that would be? That it would never happen? Yeah well, sort of looks like it might. True, there is a deep and very comfortable denial in the United States such that the country can spend anything it wants, pump debt to any level it likes, play whatever games it wishes with the way it counts spending, and still enjoy the benefits of a reserve currency indefinitely. That denial may be just about ready to hit reality:

“The Gulf monetary union pact has come into effect,” said Kuwait’s finance minister, Mustafa al-Shamali, speaking at a Gulf Co-operation Council (GCC) summit in Kuwait.

The move will give the hyper-rich club of oil exporters a petro-currency of their own, greatly increasing their influence in the global exchange and capital markets and potentially displacing the US dollar as the pricing currency for oil contracts. Between them they amount to regional superpower with a GDP of $1.2 trillion (£739bn), some 40pc of the world’s proven oil reserves, and financial clout equal to that of China. Saudi Arabia, Kuwait, Bahrain, and Qatar are to launch the first phase next year, creating a Gulf Monetary Council that will evolve quickly into a full-fledged central bank.

The Emirates are staying out for now – irked that the bank will be located in Riyadh at the insistence of Saudi King Abdullah rather than in Abu Dhabi. They are expected join later, along with Oman.

The Gulf states remain divided over the wisdom of anchoring their economies to the US dollar. The Gulf currency – dubbed “Gulfo” – is likely to track a global exchange basket and may ultimately float as a regional reserve currency in its own right. “The US dollar has failed. We need to delink,” said Nahed Taher, chief executive of Bahrain’s Gulf One Investment Bank.