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  1. The Strategic Defense Initiative (SDI), was a proposed missile defense system intended to protect the United States from attack by ballistic nuclear missiles. The program was announced in 1983, by President Ronald Reagan.

  2. Jun 4, 2024 · Strategic Defense Initiative (SDI), commonly known as Star Wars, proposed U.S. strategic defensive system against potential nuclear attacks—as originally conceived, from the Soviet Union. It was first proposed by President Ronald Reagan in a nationwide television address on March 23, 1983.

  3. Jan 18, 2019 · President Ronald Reagan saw the proposed Strategic Defense Initiative (SDI) as a safeguard against the most terrifying Cold War outcome—nuclear annihilation.

  4. Jul 18, 2018 · During the 1980s, President Ronald Reagan initiated the Strategic Defense Initiative (SDI), an anti-ballistic missile program that was designed to shoot down nuclear missiles in space. Otherwise known as “Star Wars,” SDI sought to create a space-based shield that would render nuclear missiles obsolete.

  5. Apr 28, 2023 · President Reagan hoped it would enhance strategic stability and reduce the risk of nuclear war, both with the Soviet Union and as a deterrent against a rogue regime or a madman who would seek nuclear capability. U.S. missile defense policy was and remains a defensive proposition.

  6. The Strategic Defense Initiative (SDI) was a major program for defense against Soviet missiles championed by President Ronald Reagan beginning in 1983. The U.S. missile defense program began in March 1946 in response to Germany's World War II missile program that included plans for an intercontinental ballistic missile (ICBM). By the mid ...

  7. The research took a number of forms which collectively were called the Strategic Defense Initiative, or SDI. The heart of the SDI program was a plan to develop a space-based missile defense program that could protect the country from a large-scale nuclear attack.