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US Secretary of State John Kerry (C) arrives to attend talks over Iran's nuclear programme in Geneva on November 23, 2013. US Secretary of State John Kerry arrived in Geneva on November 23 aiming to secure a landmark deal between Iran and world powers on Tehran's disputed nuclear programme.
US Secretary of State John Kerry (C) arrives to attend talks over Iran's nuclear programme in Geneva on November 23, 2013. US Secretary of State John Kerry arrived in Geneva on November 23 aiming to secure a landmark deal between Iran and world powers on Tehran's disputed nuclear programme.

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    Iran nuke deal close, but obstacles exist

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Iran nuke deal close, but obstacles exist

Top diplomats tell CNN a deal on Iran's nuclear program is close, but some obstacles remain to be resolved.

Iran nuke deal close, but obstacles exist

Top diplomats tell CNN a deal on Iran's nuclear program is close, but some obstacles remain to be resolved.