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  1. Strategic Defense Initiative (SDI), 1983. On March 23, 1983 in a televised address to the nation, U.S. President Ronald Reagan announced his intention to embark upon groundbreaking research into a national defense system that could make nuclear weapons obsolete.

  2. Less than a year after that March 1983 speech, the White House established the Strategic Defense Initiative (SDI), more commonly and derisively known as “Star Wars,” to conduct research into a wide variety of advanced technologies that could be used for land- and space-based missile defense.

  3. Jun 11, 2018 · STRATEGIC DEFENSE INITIATIVE (SDI), also known as Star Wars, was a research project to create a missile defense system that would protect the United States from nuclear attack. Begun by the administration of Ronald Reagan, few military programs have been the subject of more intense, even emotional, debate than have SDI and its successors.

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