The present article studies the national security approach of the Islamic Republic of Iran in the second decade of the Revolution, proving that there has been fundamental change in it compared with the imposed war period of Iraq against Iran. In answering the question of “what are the effects of the end of war upon the national security approach and Iran’s foreign policy?”, the hypothesis studied is that the main variable in foreign policy and national security orientation has been adopting a convergent approach in dealing with the regional and international environment, as the war ended. Iran’s relations with Europe and the United States, Soviet, and other countries in the region have been studied in order to analyze the hypothesis that focuses on developing the relationship with political entities. It has also been stated that economy lies at the heart of foreign policy and national security where a focus of the relations with European countries, easing of the strained relations with them, as well as deploying the world Bank sources have been defined. The method used in this article is analytical and deductive.