Referring to the Iraqi government, Clinton said on Friday: "You'd be fighting for a dysfunctional, unrepresentative, authoritarian government."
"There's no reason on earth that I know of that we would ever sacrifice a single American life for that."
Speaking at George Washington University during an event covering her newly released book, Hard Choices, Clinton spoke on a range of issues including the European financial crisis, the tension in the Pacific and the influence of the US in the world.