John Stewart recently showed this stunning montage. This is directly from the mouth of Bush.

2003: Beacon of democracy, bulwark against terrorism

Summer 2006: "Sustain itself, govern itself, and defend itself"  

Fall 2006: Relative peace - "if the standard is zero car bombing, it will never happen that way"

Winter 2007: Sectarian violence down - "Success is not no violence"

Spring 2007: "Either we'll succeed or we won't succeed."