National Security Directive

Overview
National Security Directives include:


 * NSD-1, "Organization of the National Security Council System" (Jan. 30, 1989).
 * NSD-42, "National Policy for the Security of National Security Telecommunications and Information Systems" (July 5, 1990).
 * NSD-47 "Counterintelligence and Security Countermeasures" (Oct. 5, 1990).
 * NSD-63 "Single Scope Background Investigation Standards" (Oct. 21, 1991).