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A '''missile-defense system''' is a system that can stop incoming [[missile]]s by firing another projectile, such as an anti-ballistic missile, at it. The first anti-ballistic missile was tested by the [[Soviet Union]] in 1961 and soon developed by the [[United States]].<ref name="Stracqualursi">Stracqualursi, Veronica (May 31, 2017). [http://abcnews.go.com/US/history-us-missile-defense-systems/story?id=47753516 A brief history of US missile defense systems]. ''ABC News''. Retrieved May 31, 2017.</ref> The two countries signed the [[Anti-Ballistic Missile Treaty]] (AMB Treaty) in 1972.<ref name="Stracqualursi"/>
In order to eliminate the threat of a large-scale nuclear attack on the United States, U.S. President [[Ronald Reagan]] developed the [[Strategic Defense Initiative]], and missile-defense systems continued to develop afterward.<ref name="Stracqualursi"/> The U.S. successfully tested its missile-defense system in 2017.<ref>[http://www.foxnews.com/us/2017/05/30/us-conducts-successful-missile-intercept-test-pentagon-says.html US conducts successful missile intercept test, Pentagon says]. ''Fox News''. May 30, 2017. Retrieved May 31, 2017.</ref><ref>Parry, Hannah (May 30, 2017). [http://www.dailymail.co.uk/news/article-4556626/America-s-missile-defense-WORKS.html America's missile defense system WORKS: The Pentagon successfully shoots down a mock nuclear warhead over California in test of missile that will stop ICBMs reaching the US]. ''The Daily Mail''. Retrieved May 31, 2017.</ref>
==See also==
*[[THAAD]], a specific missile-defense system based in [[South Korea]]
==References==
{{reflist}}
[[Category:Missiles]]
[[Category:Weapons]]