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Sochi 2014: Organisers hope opening ceremony will have 'wow factor'

7 February 2014 Last updated at 13:33 GMT

The costliest Olympic Games in history officially opens in Russia on Friday.

The build-up has been overshadowed by security fears, human rights concerns and delays to preparations.

Organisers are hoping that the extravagant opening ceremony will get people talking about the 'wow factor' of the games.

Daniel Sandford reports.