The Strategic Defense Initiative


  • The SDI was proposed by President Ronald Reagan on March 23rd, 1983
  • Its purpose was to ground and space-based systems for protection from nuclear missiles
  • It focused on strategic defense instead of strategic offense
  • A Strategic Defense Organization was set up in 1984 to oversee the Strategic Defense Initiative
  • Many criticized this as being unrealistic and unscientific
  • Since part of the defense system advocated by Reagan would be based in space, this proposed system was called "Star Wars."
  • In 1993, under the leadership of Bill Clinton, its name was changed to Ballistic Missile Defense Organization
  • Its purpose changed from national missile defense to theater missile defense
  • Some aspects of the SDI guided research for anti-ballistic missile systems
  • The Ballistic Missile Defense Organization was then renamed the Missile Defense Agency