President Barack Obama
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US President Barack Obama's vision for Iran nuclear deal

As envoys from the P5+1 group of nations begin a new round of negotiations with Iran in Geneva, US President Barack Obama has been explaining the structure an initial agreement might take.

Mr Obama said: "The essence of the deal would be that they would halt advances on their nuclear programme... that they would subject themselves to more vigorous inspections".

In return there would be "a very modest amount of relief that is entirely subject to reinstatement if they violate any part of this early agreement".

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