Ahmadinejad: OPEC members considering non-dollar reserves

• Story Highlights
• Ahmadinejad: OPEC's members considering cash reserves other than U.S. dollar
  
• He called the depreciating U.S. dollar a "worthless piece of paper"
  
• His comments at OPEC summit exposed fissures within the cartel
  
• Venezuelan President Hugo Chavez also said "the empire of the dollar has to end"
  
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