It is the natural desire of each nation to use the other as an instrument of its own purposes and policies. By dint of our mutual dependence, your influence is amplified by our power. Our power is made more responsible and more effective by your influence.
On relations between the US and the UK, as quoted in "Kingman Brewster Jr., 69, Ex-Yale President and U.S. Envoy, Dies" in The New York Times (9 November 1988)