Strategic Defense Initiative

President Reagan delivering the March 23, 1983 speech initiating SDI

Extended Range Interceptor (ERINT) launch from White Sands Missile Range

4 m (13 ft) diameter web deployed by Homing Overlay Experiment

The Strategic Defense Initiative (SDI) was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (Intercontinental ballistic missiles and Submarine-launched ballistic missiles). The system, which was to combine ground-based units and orbital deployment platforms, was first publicly announced by President Ronald Reagan on March 23, 1983. The initiative focused on strategic defense rather than the prior strategic offense doctrine of mutual assured destruction (MAD). The Strategic Defense Initiative Organization (SDIO) was set up in 1984 within the United States Department of Defense to oversee the Strategic Defense Initiative.

单词	Star Wars program
释义	Star Wars program 英语百科 Strategic Defense Initiative The Strategic Defense Initiative (SDI) was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (Intercontinental ballistic missiles and Submarine-launched ballistic missiles). The system, which was to combine ground-based units and orbital deployment platforms, was first publicly announced by President Ronald Reagan on March 23, 1983. The initiative focused on strategic defense rather than the prior strategic offense doctrine of mutual assured destruction (MAD). The Strategic Defense Initiative Organization (SDIO) was set up in 1984 within the United States Department of Defense to oversee the Strategic Defense Initiative.
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Star Wars program

Strategic Defense Initiative