Arthur:

And that is the "dreadful truth": we have unleashed forces that no one can now control, probably not for years to come. Moreover, we are now, as we have been for several years, an inextricable and significant part of the problem as long as we remain. There is no point whatsoever in our staying, not in the sense that it will improve the situation. But more Americans and Britons will be slaughtered -- just as countless Iraqis are slaughtered every hour of every day.