[Cheburashka]

The de-baathification and de-nazification are not comparable.
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They are exactly comparable. You have to break up the political ties in the old Iraqi Army. That's the only way you break up old habits of obedience, old ways of doing things. Otherwise evetyone's standing around waiting for the Americans to leave, whereupon things will return to "normal".

Separate Sunni and Shiite security forces may or may not have been a good idea, but the old Iraqi Army would have had to have been dissolved anyway.

Another thing I remember is that the Kurds demanded the abolition of the Baathist army, or they wanted their own state.

[Prost1]

For all practical purposes, the Kurds have their own state.