Define defense policies and its elements?
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Check out the links below.
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Your question is too general to provide a specific answer.\n\nGenerally speaking, security systems are put in place to protect people, property, assets, etc.\n\nSome simple examples are key locks on doors or windows, video cameras in a bank, or a firewall in a computer network.\n\nThe word system implies that there is more than one level of security and that multiple components are connected to provide a more 'failsafe' level of protection.\n\nI hope that this is some help to you.\n\nCheers\nAlister\nhttp://www.marketscience.com.au
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Basically, social policy is policy developed by governmental agencies which helps regulate health and well-being of humans in a given societal structure (like, for example, minimum liability insurance required on vehicles).  The definitions are more specific based on the agency that creates the policy.  For example, politics may create social policy to deal with the issue of abortion.  See the definitions below from Wikipedia:\n\n"Social policy relates to guidelines for the changing, maintenance or creation of living conditions that are conducive to human welfare. Thus social policy is that part of public policy that has to do with social issues such as public access to social programs. In an academic environment, social policy refers to the study of the welfare state and the range of responses to social need.\n\nIn United States politics, social policies are those which regulate and govern human behavior in areas such as sexuality and general morality."\n\nSee the following:
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negotiations\n\n(DOD) A discussion between authorities and a barricaded offender or terrorist to effect hostage release and terrorist surrender.
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To some extent the policy of a country will always be against the views of some folks.\n\nAlthough there is some rationale between resisting perceived invaders this does not justify blowing up a train full of commuters in the UK or Spain, crashing planes into buildings in the US or blowing yourself up in a crown of old folks in Iraq.
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I would think it'd be the Balance of Powers between the three branches of government.\n\n[EDIT]  Okay, I'm changing my answer - based only on a tiny paragraph I just read, but I think this is right:  a strong central government can protect the nation from external threats.  [National Defense]  \n\n(Rather than each state or small groups of states defending itself/themselves against outside nations (enemies), the central government joins its forces and protects the nation (all states) as a whole.)
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Don't ask, don't tell is the common term for the current military policy which implements Public Law 103-160, codified at 10 U.S.C. Sec. 654. The policy prohibits anyone who engages in homosexual conduct from serving in the armed forces of the United States and prohibits anyone who is not heterosexual from disclosing his or her sexual orientation, or from speaking about any homosexual relationships, including marriages or other familial attributes while serving in the United States armed forces.
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the policy of the country,\nthe intention to remain a superpower,\nensure your supremacy over others.\n\nBe it Reagan or Bush or anybody else,the RULE to reign wont die.\nthere were the GREEKS,there were the ROMANS,\nthere were the Ottomans ,there were the BRITISH now The USA.\nthats how world history approaches forward.\n\nNot by names and titles.
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All of the above plus environmentally destructive policies.
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The whole story\n\nhttp://en.wikipedia.org/wiki/Secretary_of_Defense
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The Truman Doctrine was the main response of the United States toward the aggression by the Soviet Union in Europe and Middle East illustrated through Communist Movements in Iran, Turkey and Greece, it acteally became the major American Foreign Policy.  We believe it was the first of the succession of the containment moves by the US followed by the economic containment (The Marshall Plan), the military containment (The NATO).  Ever since then the US has send money, equipment and even military force to countries that were threatened by the communist regimes to strengthen their power of resisting the spread of communism.  That policy led the US involved with Greek Civil War (1946-1949), Korean War (1950-1953) and Vietnam War (1957-1975).....etc.
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click here to see:http://www.globalsecurity.org/military/library/policy/army/fm/7-7/Appm.htm
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"Military tactics is the collective name for methods of engaging and defeating an enemy in battle."\n\n"A strategy is a long term plan of action designed to achieve a particular goal, as differentiated from tactics or immediate actions with resources at hand."\n\n-From Wikipedia
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Defcon is an abbreviation of Defense Condition.  It's a 1-5 scale employed by the United States Armed Forces (with two additional emergency conditions for overseas or NORAD assault) to indicate a general state of action readiness.  Defcon 5 is peace, defcon 1 is full-blown war.
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policy that is set by your administration.  If you are the administration then you should know!
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Eagles have a defense?
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In computing, a firewall is a piece of hardware and/or software which functions in a networked environment to prevent some communications forbidden by the security policy, analogous to the function of firewalls in building construction. A firewall is also called a Border Protection Device (BPD), especially in NATO contexts, or packet filter in BSD contexts. A firewall has the basic task of controlling traffic between different zones of trust. Typical zones of trust include the Internet (a zone with no trust) and an internal network (a zone with high trust). The ultimate goal is to provide controlled connectivity between zones of differing trust levels through the enforcement of a security policy and connectivity model based on the least privilege principle.\n\nProper configuration of firewalls demands skill from the administrator. It requires considerable understanding of network protocols and of computer security. Small mistakes can render a firewall worthless as a security tool.