Every nation has certain vital interests that inevitably come in conflict with the interests of other nations, so national policy is, of necessity, the determination and redetermination of those vital interests that we must protect. Intelligence is the information upon which these determinations may be based.
Donovan, W. J.
"The Needs of the Nation in Intelligence,"
Naval War College Review: Vol. 1
, Article 4.
Available at: https://digital-commons.usnwc.edu/nwc-review/vol1/iss2/4