The Strategic Defense Initiative (SDI) was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons. It was announced by President Ronald Reagan in 1983.
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Star Wars Program: This is another name for the Strategic Defense Initiative (SDI), coined due to its futuristic technology and space-based systems.
Ballistic Missile: A missile that follows a ballistic trajectory with the objective of delivering one or more warheads to a predetermined target.
Cold War: A period of geopolitical tension between powers in the Eastern Bloc and powers in the Western Bloc after World War II. The development of SDI was part of this larger conflict.
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