Was the war in Iraq worth it?
In my opinion that war was irrelevant for the USA and not worth it.
Will the results in Iraq be any good for the political situation in Iraq?
Probably not as the end of WWI the Europe countries along with the USA put three dynamics into Iraq all that had a history of not getting along. Those were the Kurds in the north, the Persians in the southwest and the Sunni in the center. All three have never ever gotten along well in the past centuries, but we did it for some reason, I just haven’t a clue what that reason was.
Well what about Afghanistan then?
In my opinion Afghanistan is the center of it all and the USA actually needs to be there in Afghanistan for a long time. The reason is the Pashtuns and the Sunni. The world needs these folk to get along with the rest of the world, and we in the USA and other friends need to help them at their own reasons to develop into a stable country in that region.
Afghanistan is in my opinion the only place that the USA and friends need to be to develop Afghanistan into a stable country and economy.