The problem of the national security causes many disputes and discussions. There are many definitions for concepts of national security. Traditionally security is understood, first of all, as a physical survival of the state, protection and preservation of its sovereignty and territorial integrity, an ability to react adequately to any real and potential external threats.
The national security is closely related with the security of the political system of a given country, on the other hand it has the relations with other states, which will promote or interfere with its performances. Therefore the natural concept of national security should be constructed taking into account external and internal threats.
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During the many centuries, power and military superiority were used by states for self-defence and attacks. The stronger the state was, from the military point of view, the less chances were, that it will undergo to an attack of the other states. The power enabled gains of the other territories, reducing the risk of attacks from the outside, and, certainly, elimination of any disorders, revolts etc. inside the state.
At the present stage the importance of the military power has changed. With occurrence of the nuclear weapon, modern ballistic rockets, which are capable to reach any point of the world in a few minutes, and having the large destructive force, the concept of power superiority has lost its sense. Besides with the development of science, technology and improvement of weapons became more expensive. Another race for the superiority could result in the economic exhaustion of the states. Even having nuclear weapons and excellent army, any state could not ensure guaranteed protection against an attack with the same kind of missiles, and could not save advantage, which would guarantee it against the destruction.