He talks about life under Sadaam and what would happen if the US military left Iraq:

MJT: Why do you work with Americans?
Hammer: When I was 14 years old all I liked was American cars and American movies. America was my dream. It was a dream come true when the United States Army came to Iraq. It was a nightmare in 1991 when they left again.
Maybe someone will think I’m lying, that I’m just saying this. If my friends say something like Russian weapons are the best or German cars are the best I say, no, Americans are. Everyone who knows me knows this about me.
If anyone says Arabs will win against the U.S. they are wrong. The leaders don’t want to be like Saddam. But if the US leaves Iraq it will be a big failure, especially for me. I don’t want to see this. Never.
MJT: Do you like working with Americans?
Hammer: A lot. Especially when I go outside the wire. I feel like a stranger here. When I go back inside I’m home. I have no friends outside, only family. When I go home I stay in my house. I don’t go out on the streets.
MJT: Why don’t you have any friends?
Hammer: I don’t feel like I belong to this society. They think like each other, but they don’t think like me. I can’t continue with them.
I like to know something about everything, to learn as much as I can. In Iraq if you know too much they will laugh and call you a liar.
When I was 20 I liked American music. They don’t like it. (Laughs.)
I don’t like Saddam. I hate his family.
MJT: Why do you have to cover your face?
Hammer: To protect my family. My family lives in Iraq. If they go to the U.S. I won’t have to do it. But I don’t want anyone to know me, to follow me and see where I live and kill my wife and son.
MJT: How did you feel when the U.S. invaded Iraq?
Hammer: Happy. It was like I was living in a jail and somebody set me free. I don’t want Saddam ruling me. Never. I was just waiting and waiting for this moment.
MJT: What do you think about the possibility of Americans leaving?
Hammer: It is like bad dream. Very bad dream. A nightmare. Worse than that. Like sending me back to jail. Like they set me free for four years then sent me back to jail or gave me a death sentence.
[…]
MJT: What will happen if the Americans leave next year?
Hammer: Rivers of blood everywhere. Syria and Iran will take pieces of Iraq. Anti-American governments will laugh. You will be a joke of a country that no one will take seriously.
I will kill myself if it happens. I am completely serious. The militias will hunt down and kill me and my family. I will beat them to it by killing myself.
I worked for the U.S. government for four years. Everyone who works as an interpreter for four years and gets a signature from a General or a Senator gets a Green Card. My hope is to get this somehow. I will do anything for this.
I am doing this for my son. Everything for my son. I don’t want my son living here getting into religion and militias and Al Qaeda. I want my son to be free, to have a girlfriend, to get married, and to be a good citizen.
[…]
MJT: Why is there peace in Kurdistan but not in this part of Iraq?
Hammer: The Kurds got rid of Saddam earlier. They fought against Saddam just like the Shia fought against Saddam, but the Kurds won their war and the Shia lost. In 1991 the Americans were heroes to the Kurds, but they disappointed the Shia and left them to Saddam. They were not reliable. So the next time, in 2003, some Shia thought they should get help from Iran. They know Iran is not going anywhere. Iran is a more reliable ally than the Americans.
The Shia never forgot being abandoned by the Americans. They talk about this all the time, still. They know the U.S. will leave Iraq and they will face Al Qaeda alone.

(via)
Read the whole thing (warning: graphic language) — it helps to get an Iraqi perspective.
Reading it makes me wonder if the left wasn’t so bent on getting us out of there, would the Iraqis trust us more and be willing to accept the fact that all we want to do is help them get on their feet and run the country themselves.