"In September [2002] the government announced the national security strategy. That is not completely without precedent, but it is quite new as a formulation of state policy. What is stated is that we are tearing the entire system of the international law to shreds, the end of UN charter, and that we are going to carry out an aggressive war - which we will call "preventive" - and at any time we choose, and that we will rule the world by force. In addition, we will assure that there is never any challenge to our domination because we are so overwhelmingly powerful in military force that we will simply crush any potential challenge. That caused shudders around the world, including the foreign policy elite at home which was appalled by this. It is not that things like that haven't been heard in the past. Of course they had, but it had never been formulated as an official national policy. I suspect you will have to go back to Hitler to find an analogy to that. Now, when you propose new norms in the international behavior and new policies you have to illustrate it, you have to get people to understand that you mean it. Also you have to have what a Harvard historian called an "exemplary war", a war of example, which shows that we really mean what we say. And we have to choose the right target. The target has to have several properties. First it has to be completely defenseless. No one would attack anybody who might be able to defend themselves, that would be not prudent. Iraq meets that perfectly... And secondly, it has to be important. So there will be no point invading Burundi, for example. It has to be a country worthwhile controlling, owning, and Iraq has that property too."