Indeed. They're so tight that Iraqi military units are not permitted in Kurdish lands, and the flag of Iraq is banned from government buildings in favor of the Kurdish one.
It's not nearly as hard to set up a functioning society and government around people who get along. My point is that exporting the Kurdish success story will require carving Iraq apart first. Otherwise, it's back to the drawing board.
The Kurds are getting ready to send 3,000 troops to help in Baghdad.