And I think all of us have a sense if we imagine the kind of world we would face if the people who bombed the mess hall in Mosul, or the people who did the bombing in Spain, or the people who attacked the United States in New York, shot down the plane over Pennsylvania and attacked the Pentagon, the people who cut off peoples' heads on television to intimidate, to frighten -- indeed the word "terrorized" is just that. Its purpose is to terrorize, to alter behavior, to make people be something other than that which they want to be.

Donald Rumsfeld, 24/12/2004, CNN transcript of his visit to US troops in Iraq