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U.S. President Barack Obama (L) hugs Secretary of Defense Chuck Hagel during a press conference announcing Hagel's resignation in the State Dining Room of the White House November 24, 2014 in Washington, DC.
U.S. President Barack Obama (L) hugs Secretary of Defense Chuck Hagel during a press conference announcing Hagel's resignation in the State Dining Room of the White House November 24, 2014 in Washington, DC.

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Rear Admiral John Kirby, the Pentagon spokesmanm speaks with Christiane Amanpour about Chuck Hagel's resignation.

Pentagon: Resignation not about Iraq

Rear Admiral John Kirby, the Pentagon spokesmanm speaks with Christiane Amanpour about Chuck Hagel's resignation.