Gen. Martin E. Dempsey, Chairman of Joint Chiefs of Staff, in November of 2013. Paul J. Richards /AFP/Getty Images hide caption

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Robert Gates in June 2011 during his final official news conference as secretary of defense. Jason Reed /Reuters/Landov hide caption

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Robert Gates on the emotions he felt when writing condolence letters
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Robert Gates in June 2011, his last month as secretary of defense. Alex Brandon/AP hide caption

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Gates: Obama Made Solid Decisions, But Was Swayed By Factious Staff
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Robert Gates waves and President Obama claps at the then-defense secretary's farewell ceremony in June 2011. Jason Reed/Reuters /Landov hide caption

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On 'Morning Edition': Steve Inskeep and David Greene discuss NPR's interview with Robert Gates
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Ari Shapiro on 'Morning Edition'
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