It can't get any worse than this in Iraq?

Congresswoman Maxine Walters wants the U.S. to pull out of Iraq. When asked on Fox News Sunday about the consequences of this to Iraq she said in part:

"It can't get any worse than this."

If things in Iraq are indeed as bad is they could possibly get we should immediately leave. But I think that Congresswoman Walters should study a bit of history to learn how bad things can really get in a country saturated with ethnic and religious hatred.