Dollar at increased risk of losing status as a reserve currency

Venezuela's Communist leader Hugo Chavez and Iran's Mahmoud Ahmadinejad, speaking at the Organization of Petroleum Exporting Countries (OPEC) summit in Riyadh, said they no longer want be paid in U.S. dollars for their petroleum, but in euros.
The outspoken US political adversaries said the weak U.S. dollar is cutting their potential revenue. Ahmadinejad said countries are getting his oil, and in return he receives "a worthless piece of paper."
In addition, Saudi Arabia's foreign minister Prince Saud al-Faisal's own worries about dollar weakness were exposed, when he commented Friday that the U.S. dollar could collapse if OPEC mentioned dollar weakness in its closing comments.