Oil prices, peace deal to top Cheney's Mideast agenda

• Story Highlights
• Trips to Israel, Saudi Arabia, Palestinian territories on vice president's itinerary
  
• President Bush, Condoleezza Rice, Sen. John McCain have visited Mideast recently
  
• On trip, Cheney will highlight progress in Iraq since "surge" of U.S. troops
  
• It's unclear what Cheney will ask of Saudi Arabia to help ease oil prices
  
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