ولی فقیه, or "Guardian Jurist," is a key concept in the political system of the Islamic Republic of Iran. It refers to a senior Islamic cleric who holds significant authority over the state, combining both religious and political leadership. The position was established after the 1979 Iranian Revolution, aiming to ensure that the government aligns with Islamic principles. The ولی فقیه is responsible for overseeing the implementation of Islamic law and has the power to make important decisions regarding national security, foreign policy, and the judiciary. This role is often associated with the leadership of آیت‌الله خمینی, the founder of the Islamic Republic, and his successors, who have shaped Iran's political landscape.