Authors: U.S. economy could fall casualty to wars

• Story Highlights
• Authors say economic, social costs of wars could reach $5 trillion by 2017
  
• Interest alone on money borrowed to fund wars could top $800 billion, authors say
  
• Congressional Budget Office questions numbers; authors say CBO short-sighted
  
• By September, Iraq war costs will trounce those of the 12-year Vietnam War
  
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