The War Within -- Part 1 By Bob Woodward

In the summer of 2006, President Bush found himself increasingly at odds with his top military advisers over the war strategy in Iraq. As Gen. George W. Casey Jr., left, advocated a reduction in troops, National Security Adviser Stephen J. Hadley pushed for a review of strategy. (Photos AP, Getty)

Part 1: Dissension -- Doubt, Distrust, Delay

As violence and U.S. casualties skyrocketed in the summer of 2006, Bush acknowledged to himself what he didn't publicly: The war had taken a perilous turn. After months of delay, Bush approved a secret war review in October 2006.

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Monday: Part 2 Rift -- In the fall of 2006, the nation's military leaders find themselves badly out of sync with the White House over the Iraq war.