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'
Stephen Colbert talks with ABC News' Diane Sawyer about his trip to Iraq on "Good Morning America". (Ida Mae Astute/ABC)
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