Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'

Charlie Gibson will retire, turning over anchor chair to Diane Sawyer.

PHOTOS: Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'

Charles Gibson to Retire from 'World News', Diane Sawyer to take succeed him
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
Charlie Gibson Retires from ABC News; Diane Sawyer to Anchor 'World News'
In one of her most telling interviews, then-Gov. Sarah Palin spoke with ABC News' Charles Gibson shortly after being named by Sen. John McCain, R-Ariz., as the Republican vice presidential candidate in 2008. (Donna Svennevik/ABC )
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