It is not only possible, it is now likely. Iran has announced it will open an oil bourse in the coming months, with payment in Euros accepted. The significance of this for geopolitics cannot be overstated. The dollar enjoys its status as the world's reserve currency because currently every nation has to exchange its currency for dollars to buy oil. This creates an artificial demand for dollars. That demand helps to prop the dollar up. China, Russia, and to a lesser extent, Europe, all want this to change. Some Arab nations also want it to change, because as the situation...