What's the state of Kerry's nuclear deal with Iran?

Aired: 3/14/2015 | 0:04:03 | Clip
Secretary of State John Kerry said Sunday that he hopes to reach the framework of a nuclear deal with Iran by the end of March. But he said he worries Senate Republicans have made the talks even tougher after they sent a letter to Iranian leaders, which Kerry later dismissed as false information that was meant to interfere with the deal.

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