Australia, Brazil, Canada, China, India, Japan and South Africa, these countries were assumed as `middle power' during the Cold War era as they do not aligned to either USA led front or USSR led front. The world was facing nuclear tensions and militarization. Several military fronts were formed by the two supper powers. International policies were influenced by USA and USSR. Influence of UN in international relation was reduced. Economic growth of middle powers was high and they are being described as emerging powers after the end of Cold War era. The influence of middle power has modified without structural change in international system. New agenda items, like economic growth, education, unemployment, poverty etc were focused by middle powers after Cold War era. New international leadership was emerged and defended the demilitarization, denuclearize the world. Middle powers provided a leadership based on technical and entrepreneurial and not based on power. The middle powers were actively engaged in deepening the conditions of interdependence in the emerging multipolar and 'democratising' world order.