Marcus and Gerson on the Islamic State threat

Aired: 8/22/2014 | 0:12:07 | Clip
Washington Post columnists Ruth Marcus and Michael Gerson join Judy Woodruff to discuss the week’s top news, including the legacy of mistrust that laid the groundwork for unrest in Ferguson, Missouri, as well as the shifting U.S. stance on pursuing the Islamic State group after the murder of American journalist James Foley.

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