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The Olympic flag arrives from the London 2012 Olympics, in Rio de Janeiro, on August 13, 2012
The Olympic flag arrives from the London 2012 Olympics, in Rio de Janeiro, on August 13, 2012

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    London Games lessons for Rio

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London Games lessons for Rio

CNN's Alex Thomas assesses the potential problems for Rio and lessons learned from the London Games.

London Games lessons for Rio

CNN's Alex Thomas assesses the potential problems for Rio and lessons learned from the London Games.