The study of the foreign policy of the Islamic Republic of Iran regarding the specific features of the Islamic Revolution and its reflection that has profound effects on the strategy of the region and the world is of specific importance. Undoubtedly, current Iran's foreign policy is based on the political ideas of the founder of the Islamic Republic of Iran, which, in order to understand and realize it better, his thinking model in the context of foreign policy with other countries should be investigated more. Imam Khomeini, stating this important theory that "the source of conflicts and disagreements is selfishness, and yet peace will be an unreachable wish of humanity", had firm belief in the fundamental ethics, accountability and realist idealism in the foreign policy. By understanding all of the above components, one can inquire into the depth of Imam Khomeini's thought in drawing up a road map for peaceful coexistence despite the belief in the establishment of a divine sovereignty, mutual respect for the sovereignty of the countries, despite the belief in exporting the Islamic Revolution, and the teleology of the Islamic Revolution along with non-interference in the internal affairs of countries.