I've found no mention in that link that war was the only option to get Saddam out. Did the US gave a choice to the Iraqies wich they prefer, war or Saddam? From what I can see for now, the Iraqies don't seem so pleased with the US invasion as some have let us understand.
>Without war, Saddam stays in power, continuing to torture Iraqi citizens:
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http://web.amnesty.org/ai.nsf/Index/MDE140102001?OpenDocument&of=COUNTRIES%5CIRAQ