Michael Hayden, former CIA director
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Syria crisis: Obama's 'credibility on the line'

Former director of the CIA, General Michael Hayden, has said President Barack Obama's "credibility is on the line" over Syria.

He said the credibility of the America was also on the line over possible action on Syria.

President Obama is pushing for support for military strikes. Russia and China have warned the US not to take action without UN backing.

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