The unexpected and rapid collapse of the Soviet Union has had significant implications for both the international and regional balance of power. The United State has devised a new formulation for its national security concept. This new strategy saw the need to overcome the geographical boundaries and then came the second Gulf war to represent an opportunity for the US to implement its vision of working unilaterally and combating any potential hegemon even from the European allies. For its part, Russia has endeavoured to reconstruct its relations with the world, especially with its neighbours, former allies and yesterday's enemy of the liberal West, and also to restructure its foreign policy, opening up to the West and deal with it on the basis of common interests, and dismantling Warsaw pact to enter into a new security project.