BBC: Iranian President Mahmoud Ahmadinejad has suggested an end to the trading of oil in US dollars, calling the currency "a worthless piece of paper".
The call came at the end of a rare Opec summit, and was opposed by US ally Saudi Arabia.
The Iranian president had wanted to include the attack on the dollar in the summit's closing statement.
The communique made little mention of the dollar, however, focusing instead on energy security and the environment. Iran leader dismisses US currency (more)
BBC:
Dollar continues near record lows
Mark Alexander
