Whatever your feelings about the ethics of espionage, there can be no doubt that all national leaders look to intelligence agencies for answers and guidance in important matters of state. They are thus quite influential, and in a crisis our fate may hinge on their work. We need to understand them. Plus, even without security
clearances, we can all make use of some of their sources and products, and adapt professional techniques to good noncovert purposes. Government agencies have no monopoly on intelligence.
