Interview: Significant Gaps With Iran Over Nuclear Program

Secretary of State John Kerry is in Vienna this week meeting with Iranian Foreign Minister Javad Zarif and European leaders in a final attempt to reach a deal with Iran on its nuclear program.

Mr. Zarif has maintained that Iran does not intend to use uranium enrichment for weapons but to produce fuel to operate nuclear power plants. All parties have until July 20, unless they agree to extend it by another six months.

So far, there are no plans for an extension.

ABC News correspondent Tom Rivers joined us with the latest:

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