Daniel Sandford at the site of the Games
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Sochi 2014: Security tight for Winter Olympics

3 February 2014 Last updated at 07:15 GMT

Security measures are being stepped up in Sochi, ahead of the start of the Winter Olympics on Friday.

The heightened security comes as Islamic militants have threatened to derail the Games.

Daniel Sandford looks at some of the security measures in place on the ground.

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