9 May New York Times commentary - Three Iraqs Would Be One Big Problem by Anthony Cordesman.

Some pundits and politicians have been floating the idea that America consider dividing Iraq into three ethno-religious entities, saying this would not only stem the insurgency but also allow our troops an earlier exit. They are wrong: fracturing the country would not serve either Iraqi or United States interests, and would make life for average Iraqis even worse.

The first problem is that Iraq does not have a neat set of ethnic dividing lines. There has never been a meaningful census of Iraq showing exactly how its Arab Sunnis, Arab Shiites, Kurds and other factions are divided or where they live. The two elections held since the toppling of Saddam Hussein have made it clear, however, that Iraq's cities and 18 governorates all have significant minorities...

Moreover, Iraq is heavily urbanized, with nearly 40 percent of the population in the multiethnic greater Baghdad and Mosul areas. We have seen in Northern Ireland and the Balkans how difficult it is to split cities, and with Iraq's centralized and failing services and impoverished economy, violence and economics cannot be separated...

And of course, there is no way to divide Iraqi that will not set off fights over control of oil. More than 90 percent of Iraq's government revenues come from oil exports...

Dividing Iraq would also harm regional stability and the war on terrorists. Sunni Islamist extremist groups with ties to Al Qaeda already dominate the Sunni insurgents, and division would only increase their hold over average Iraqis...

Iran, of course, would compete for the Iraqi Shiites. The Kurds have no friends: Turkey, Iran and Syria would seek to destabilize the north and exploit the divisions between the two main Kurdish political unions. In the end, these divisions could spill over into the rest of the Middle East and the Arab world, creating a risk of local conflicts and the kind of religious tension that feeds Islamist extremism...