Giving a big picture of what has been the political contribution of the mastermind of  Realpolitik , a strategy focused on the great powers' interests, and how it tackled many geopolitical crises, this essay is going to pinpoint the steps of his diplomatic career from the epoch of Cold War to nowadays.  Taking over the charge of US Secretary of State and US National Security Advisor in the ‘70s, under Richard Nixon and Gerald Ford presidencies, let’s have a look at the official data concerning his academic and political battles in the name of his republican values. The magician of the foreign relations USA has ever had, strived to build a shared future on the international scene, although thwarted by many parts. Kissinger, a German refugee that was escaped from Nazism, was credited in the US with several diplomatic achievements. After serving US Army, he accomplished his M.A. and Ph.D. in Political Science at Harvard University, whose thesis was titled  Peace, Legitimacy, and the E