In his speech yesterday, Bush tried imagining:

Imagine an Iraq where militia groups backed by Iran control large parts of the country.

Unfortunately, we don't have to imagine it. It's right there. Our 2003 invasion catapulted into power militias like the Badr Brigade and secret societies like Al Dawa, backed by Iran, and they now run the place. As Bush said yesterday: "Together our coalition has achieved great things in Iraq."