there is no more such a thing as Iraqi as there was Yugoslavian. the same holds true for most of the arab countries. they were created by the league of nations as rewards for cooperating sultans during WWI and punishment for those that did not.
That was true 60-80 years ago. But the Iraqis have been a country long enough to have developed a national identity. The Kurds are the most likely not to consider themselves Iraqi, though their active participation in the government lends credence to the idea that they are willing to stay in an Iraq that allows them to have a voice, and that recognizes their equality with their Arabic neighbors.
So I humbly beg to differ.