The security order in Central Asia has undergone a stable process in the transition to new conditions during the last decade. Two catalysts after 2021 have accelerated this process. First, the withdrawal of International forces from Afghanistan, which led to the fall of the government in this country and the rise to power and stabilization of the presence of the Taliban; And second, Russia's military invasion of Ukraine, which increased the tension between the great powers at the international level and created a situation that is interpreted as a new cold war in Russia's peripheral area. These conditions led to forming the security order governing Central Asia in new conditions. In such a situation, this paper seeks to answer this key question: how will the new security order of Central Asia after 2021 affect the security interests of the Islamic Republic of Iran? The hypothesis that is raised in response to this question is based on the proposition that these conditions, by intensifying the security situation of the great power, have caused a decrease in the security factor in Iran's peripheral environment. Strengthening the flow of multilateralism and strengthening expansive approaches in the new security order, implies opportunities. In this paper, I try to prove the hypothesis through the exploration method to discover systematic patterns in Central Asia's security dynamics. The Copenhagen school is considered as the conceptual framework of this research in the comparative approach.