During the development of the international community changing the institutional models of security. One of the oldest, which is applicable to the present day, is a system of balance of power (power). The balance of power means the ability of preserving peace in the world, or better yet, the existing positions of the great powers on the basis of approximately equal power (primarily military and economic). Extremely important role in this security concept played in the new century state-balancer that the war puts aside those forces that wish to maintain the status quo. Imprtant role for a long time in international relations as a balancer had England (United Kingdom).