Ensuring Ukrainian sovereignty is protected is in America's interests: former Secretary of State

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Former Treasury Secretary Jack Lew: The notion the U.S. pays all its bills is pretty fundamental

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Remembering Former Secretary Of State Colin Powell

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Former U.S. Secretary of State George Shultz remembers historic career

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Ex-defense secretary: Why I couldn't work for Trump

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Former Secretary of State Condoleezza Rice on dealing with China

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Leaders honor former Secretary of State Madeleine Albright

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Former Treasury Secretary Jack Lew on the deficit

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Trump strips security detail from former Secretary of State Mike Pompeo

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Biden pays tribute to former Secretary of State Madeleine Albright

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Bill Clinton remembers former Secretary of State Madeleine Albright

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Remembering Former Secretary of State Colin Powell On Meet the Press

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Remembering Colin Powell, former secretary of state | Nightline

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Former NATO secretary general on 'very serious' divide between U.S., Europe

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Ash Carter, Former Defense Secretary, Dies At 68

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Former Secretary of State Al Haig Dies

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WATCH: Former Secretary of State Tillerson calls Trump's Ukraine request on call 'wrong'

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Former Secretary of State Madeleine Albright on Hillary Clinton's historic candidacy

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Former Nazi concentration camp secretary guilty of accessory to 10,505 murders

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