In Iran, which officeholder represents the most significant executive authority?

The Supreme Leader of Iran holds the most significant executive authority in the country. This position is unique and powerful, overseeing not only the political and governmental institutions but also the armed forces and the judiciary. The Supreme Leader has the ultimate say over all major decisions, including foreign policy and national security, and wields significant influence over various other branches of government.

While the President of Iran manages the executive branch and is responsible for the administration of government policies, the President's authority is subordinate to that of the Supreme Leader. The other options, including the Chairman of the Expediency Council and the Council of Guardians, have important roles within the political system, but their powers are still subject to the overarching authority of the Supreme Leader, who is the highest-ranking official in Iran. Thus, the Supreme Leader's position is unrivaled when it comes to the overall governance and strategic direction of the country.