re: Iraqi Judge Issues Arrest Warrant for Sadr, or "How the stooge system works".
It's unclear what the interim government will look like after independence in June, but when the Iraqi people hold national elections in a year or so they will be democratic, not authoritarian like the old East Bloc nations you mention. If they ask us to leave, we will.
As for Sadr, were he doing what he is doing in ANY Western nation he would be arrested as well.