Former Secretary of State Colin Powell during his appearance Sunday on CBS News' Face the Nation. Chris Usher/CBS News via Getty Images hide caption

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An Afghan boy stands aside a motorbike used by a suicide bomber in Kandahar City on Oct. 23. Two civilians were killed and two others were wounded in the attack. Rahmat Gul/AP hide caption

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On The G20 Summit

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House Minority Leader Rep. John Boehner, R-OH, ta a campaign event in Canton, Ohio, on Saturday. Matt Sullivan/Getty hide caption

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Ari Shapiro: With the president

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