ABC

This Sunday, as the campaign against ISIS intensifies, U.S. Ambassador to the United Nations Samantha Power comes to "This Week."

And the powerhouse roundtable debates all the week's politics, with Democratic strategist James Carville, ABC News contributor and Republican strategist Ana Navarro, Wall Street Journal columnist Bret Stephens, and editor and publisher of The Nation and WashingtonPost.com columnist Katrina vanden Heuvel.

See the whole political picture, Sunday on "This Week."

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Go here to find out when "This Week" is on in your area.