There is another view by the Constructivists which argues that individuals are influential in shaping events in international systems. The Constructivists approach, influenced by the written works of Alexander Wendt (1958–) argues (Wendt, 1992) argues that unlike the ways in which theoretical explanations by realist and liberalist were incapable of explaining events such as the dissolution of the Soviet Union and the Berlin Wall fall, their theory is able to explain these event (Blair et al, 2009 p.21-22).
Between the years 1947 -1991, the world experienced the struggle by two fundamental opposing systems; the socialist communism and liberal democracy. The two proponents of this struggle which eventually engulfed the rest of the globe were the US and the Soviet Union. The end of World War II brought an end to the European supremacy in world politics as they were eclipsed by the new powers of the Soviet Union and the US. The two had overridden the European powers economically and militarily as the Great powers of Europe (British Empire and France) were drawn to their limits by the aggression of the Axis(Germany ,Italy& Japan).The United States was able to emerge as a victor of the war having done well economically and militarily with no major destruction to their infrastructure. The Soviet Union too had moved alliances during the war and was part of the winning side though it sustained massive losses on the account of the Axis. They had matched their tent against the Third Reich and also wanted to increase their sphere of influence by becoming a major player in the international system.