The GAO report states pretty unequivocably that we have no plan for success and that we are unlikely to be successful. It states that we are failing in curbing the influence of militias, that we are failing to create effective minitries of government, that we are failing to revitalize the Iraqi economy, and that we have no answer to who is going to pay for ongoing operations and where that money is going to come from. They recommend that the National Security Council get their shit together, come up with a real plan, give clear responsibilities for enacting the plan, etc. It's a kind way of pointing out that there is no plan, and that the Iraq War is a failure.
Gee, what a surprise! Not.
There's plenty more. Go read