US President Barack Obama
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Barack Obama: 'No sign' of Petraeus security leak

US President Barack Obama says he has seen "no evidence" that former CIA director David Petraeus' extra-marital affair compromised national security.

General Petraeus' resignation should be a "sidenote" to his distinguished career, Mr Obama added.

President Obama was making his first public comments on the scandal at his first news conference since his re-election.

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