Iraq’s constitution describes its government as an Islamic, democratic, federal parliamentary republic. The political situation in Iraq is not to the point of stability such that definitive comments can be made as to the justice system as a whole. The country is still torn by sectarian strife, principally between Sunni and Shia elements. Justice is, therefore, highly regionalized.
Mosul is still under ISIL control, and the population remaining there has little hope for justice of any kind.
The country as a whole continues to operate on a system of revenge justice. Until such time as restorative justice can be implemented, minimal improvements are expected.
Finally, the Kurdish portion of the population finds themselves outside the kin of justice.
At best, justice in Iraq is a work in progress, and the outcome is uncertain.