Iraq has many problems to deal with. The biggest of these is sectarianism, not the actions of a few U.S. troops last November. The Sunnis used to be in charge under Saddam and not they aren’t. Now, they have to share the power, and that doesn’t sit well with some. When Iraqis were dragged off buses and shot, they were first seperated into Sunni and non-Sunni. The Sunnis were released.
The new Prime Minister, Nouri al-Maliki, has his work cut out for him. If he cannot stem the sectarian violence, both Shia and Sunni incited, his government is doomed.