Strategic Defense Initiative
the plan by US President Reagan to build a defence in space against nuclear weapons. Its popular name was ‘Star Wars’. He announced this in 1983, but it was never built because of the expense and the end of the Cold War. SDI was cancelled in 1993.
* * *▪ United States defense systemproposed U.S. strategic defensive system against potential nuclear (nuclear weapon) attacks—as originally conceived, from the Soviet Union. The SDI was first proposed by President Ronald Reagan (Reagan, Ronald W.) in a nationwide television address on March 23, 1983. Because parts of the defensive system that Reagan advocated would be based in space, the proposed system was dubbed “Star Wars,” after the space weaponry of a popular motion picture of the same name.The SDI was intended to defend the United States from attack from Soviet intercontinental ballistic missiles (ICBMs) by intercepting the missiles at various phases of their flight. For the interception, the SDI would require extremely advanced technological systems, yet to be researched and developed. Among the potential components of the defense system were both space- and earth-based laser battle stations, which, by a combination of methods, would direct their killing beams toward moving Soviet targets. Air-based missile platforms and ground-based missiles using other nonnuclear killing mechanisms would constitute the rear echelon of defense and would be concentrated around such major targets as U.S. ICBM silos. The sensors to detect attacks would be based on the ground, in the air, and in space and would use radar, optical, and infrared threat-detection systems.Though initial funding for the SDI had been approved by the U.S. Congress by the mid-1980s, the program aroused a heated debate among both arms experts and public officials over its military and political implications and its technical feasibility. Proponents of the SDI asserted that the overwhelming technological obstacles to its implementation could eventually be overcome and that an effective defensive system would deter potential Soviet attacks. Critics of the program argued variously that the scheme was unworkable, that it encouraged a further arms race, and that it undermined established arms-control agreements and weakened the prospects for further arms-control agreements. Testing continued on a number of SDI-related devices, but the breakup of the Soviet Union in 1991 changed the conditions of such defense.
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Strategic Defense Initiative — Organization SDIO Agency overview Formed 1984 Dissolved 1993 (renamed) Superseding a … Wikipedia
Strategic Defense Initiative — Strategic Defense Initiative, = SDI … Useful english dictionary
Strategic Defense Initiative — Logo der Strategic Defense Initiative Die Strategic Defense Initiative (SDI; dt.: Strategische Verteidigungsinitiative) ist eine von US Präsident Ronald Reagan zu Zeiten des Kalten Krieges ins Leben gerufene und am 23. März 1983 offiziell… … Deutsch Wikipedia
Strategic Defense Initiative — Strategic De|fense I|ni|tia|tive, the the full name of ↑SDI … Dictionary of contemporary English
Strategic Defense Initiative — noun A system proposed by on March 23, 1983, to use ground based and space based systems to protect the United States from attack by strategic nuclear ballistic missiles. Abbreviation: SDI. Syn: Star Wars … Wiktionary
Strategic Defense Initiative — Strate′gic Defense′ Ini tiative n. mil gov Star Wars Abbr.: SDI … From formal English to slang
Strategic Defense Initiative. — See Star Wars. * * * … Universalium
Strategic Defense Initiative — (SDI) Commonly called star wars ; plan propounded by President Ronald Reagan to erect a shield of space weapons over the United States to stop incoming missiles … Bryson’s dictionary for writers and editors
Strategic Defense Initiative — Star Wars , American military plan for destroying incoming nuclear missiles while they are still in the air (first announced by former President Ronald Reagan), SDI … English contemporary dictionary
Strategic Defense Initiative. — See Star Wars … Useful english dictionary