Iran and Saudi Arabia are the two top players in the region and rivals in West Asia. The events of 2003 in Iraq and the fall of Saddam led to an increase in the role and influence of Iran in sphere of this country. In this regard, Saudi Arabia tried to increase its geopolitical influence in Iraq, and to prevent influence of Iran, which, according to the Saudis, Iraq is the first Arab Shia government and one of the important links of the axis of resistance. Therefore, the main goal of this research is to analyze the policies and mechanisms of Saudi confrontation with Iran and the axis of resistance in sphere of modern Iraq. To achieve the main goal, the descriptive-analytical method and the theoretical framework of threat balance have been used.

The findings of the research show that the Saudis consider Iraq a part of the axis of resistance. They are against the influence of the Iran in this country. From their point of view, the continuation of Iran's influence in Iraq not only improves the regional position of the Islamic Republic, but also leads to a change in the balance of power in favor of the axis of resistance. Therefore, by supporting Sunnis and secular Shiites, creating cynicism in the media against Iran, trying to create insecurity by inciting ISIS to attack Iraq, getting close to America with the aim of weakening the balance of power to the detriment of the Iran and the axis of resistance.