Among the Arab neighbors in the Persian Gulf region, Iraq is undoubtedly the main focus of Iran's view of the region and the Arab world due to its special political, security, ethnic, cultural and historical characteristics. From an Iranian point of view, Iraq is a multi-ethnic and fictitious country that was created by the British government's foreign policy to protect its interests and establish a balance of power in the region, especially with Iran. Over the past 30 years, the political and security challenges caused by the dominant presence of a Sunni government in the form of the Baath Party have been the manifestation of numerous disturbances and tensions in the Persian Gulf region and especially for Iran. The relations between Iran and Iraq have always been tense from the beginning until the fall of Saddam Hussein and after Saddam Hussein until now, in such a way that during the recent centuries and decades these relations have a diverse range of: temporary peaceful relations, tension, hostility and full-scale war. includes Considering the growing importance of Iraq for the Islamic Republic of Iran and the effects that Iraq's internal developments can have on Iran's foreign policy, in this article we have investigated the soft power and diplomacy of the Islamic Republic of Iran in Iraq.