Coming up on 'This Week': Secretary of State John Kerry

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As an historic deal is reached over Iran's nuclear program, George Stephanopoulos goes one-on-one with Secretary of State John Kerry. Plus, we get reaction to the deal from Intelligence Committee Vice Chair Sen. Saxby Chambliss, R-Ga. today on "This Week."

Then, in an ABC News exclusive, Facebook CEO and founder Mark Zuckerberg discusses his new push for immigration reform, only on "This Week."

And our powerhouse roundtable tackles all the week's politics, with ABC News' Cokie Roberts, Democratic strategist and ABC News contributor Donna Brazile, ABC News political analyst Matthew Dowd, and Weekly Standard editor Bill Kristol.

And in our "Sunday Spotlight," author and poet Dr. Maya Angelou discusses her latest work "Mom & Me & Mom," and her lifetime achievement recognition at the National Book Awards this week.

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