Break Up Of Iraq?

Four predominantly Shia provinces -- Basra, Maysan, Thi Qar and Muthanna -- have discussed plans to make themselves autonomous regions, and some Shias have advocated the construction of a larger federal region that would include all nine southern and central provinces, which are predominately Shia.

Although the mainly Sunni Iraqiya parliamentary bloc did not support the Salaheddin province's decision, the move received wide support from fellow Sunni leaders. Officials and tribal leaders in the predominantly Sunni province of Anbar have said that they are also considering a request for their province to be given autonomy.

Iraq's Sunnis have been increasingly showing interest in autonomy from the rest of Iraq, with some even calling for Sunni provinces to secede from the Iraqi state. From here.