"It is now clear that we are facing an implacable enemy whose avowed objective is world domination by whatever means and at whatever cost. There are no rules in such a game. Hitherto acceptable norms of human conduct do not apply. If the United States is to survive, long-standing concepts of "fair play" must be reconsidered. We must develop effective espionage and counterespionage services and must learn to subvert, sabotage and destroy our enemies by more clever, more sophisticated and more effective methods than those used against us. It may become necessary that the American people be made acquainted with, understand and support this fundamentally repugnant philosophy".

CIA memo, 1954

From "Legacy of Ashes: The History of the CIA" by Tim Weiner