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Counterforce
In nuclear strategy, a counterforce target is one that has a military value, such as a launch silo for intercontinental ballistic missiles, an airbase at which nuclear-armed bombers are stationed, a homeport for ballistic missile submarines, or a command and control installation.〔Martel, William C, and Paul L Savage. ''Strategic Nuclear War: What the Superpowers Target and Why''. New York: Greenwood Press, 1986.〕 The intent of a counterforce strategy (i.e., attacking counterforce targets with nuclear weapons) is to disarm an adversary by destroying its nuclear weapons before they can be launched, thereby minimizing the impact of a retaliatory second strike.〔Corcoran, Edward A. (''Strategic Nuclear Weapons and Deterrence''. ) (GlobalSecurity.org ). November 29, 2005. Accessed July 31, 2010.〕 However, counterforce attacks are also possible in a second strike, especially with weapons like UGM-133 Trident II. A counterforce target is distinguished from a countervalue target, which includes an adversary's population, economic, or political resources.〔 In other words, a counterforce strike is against an adversary's military while a countervalue strike is against an adversary's cities. A closely related tactic is the decapitation strike, which by destroying an enemy's nuclear command and control facilities similarly intends to eliminate or reduce their ability to launch a second strike.
==Theory==
In nuclear warfare, enemy targets are divided into two types: counterforce and countervalue. A counterforce target is an element of the military infrastructure, usually either specific weapons or the bases which support them. A counterforce strike is an attack which targets these elements whilst leaving the civilian infrastructure – the countervalue targets – as undamaged as possible. Countervalue refers to the targeting of an opponent's cities and civilian populations.
An ideal counterforce attack would kill no civilians. Military attacks are prone to causing collateral damage however, and this is especially true when nuclear weapons are employed. In nuclear terms many military targets are located in proximity to civilian centres, and a major counterforce strike employing even relatively small nuclear warheads against a nation would certainly inflict numerous civilian casualties. Further, the requirement to use ground burst strikes to destroy hardened targets would produce enormously more fallout than the air bursts used to strike countervalue targets; introducing the possibility that a counterforce strike would cause more civilian casualties—over a medium-term view—than a countervalue strike.〔http://homepage.mac.com/msb/163x/faqs/nuclear_warfare_103.html〕
Counterforce weapons could be seen to provide more credible deterrence in future conflict by providing options for leaders.〔Lieber, Keir A, and Daryl G Press. "(The Nukes We Need )." Foreign Affairs 88, no. 6 (Nov/Dec 2009): 39-51.〕 One of those options considered by the Soviet Union in the 1970s is basing missiles in orbit.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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