How the 1979 Iranian Constitution Structures the Dual Authority of the Supreme Leader and the President

The 1979 Iranian Constitution divides state power by granting the elected president control over the national budget and day-to-day bureaucracy, while permanently subordinating that office to an unelected Supreme Leader who commands the armed forces, the judiciary, and foreign policy. This dual structure, codified after the Islamic Revolution and heavily amended in 1989, ensures that popular mandates can shape economic administration but cannot alter the state's ideological foundations or security apparatus.[1][2]

The framework establishes a hybrid system where republican institutions operate under the strict supervision of religious authority. According to the British Journal of Middle Eastern Studies, this creates a "peculiar hybrid regime" where democratic elements like the 290-seat parliament (Majles) and the presidency are checked by unelected clerical bodies. The Supreme Leader, currently Ali Khamenei, holds the ultimate veto over all state matters, a principle known as Velayat-e Faqih, or the guardianship of the Islamic jurist.[3][4]

Article 110 of the Constitution explicitly outlines the Supreme Leader's powers, which include serving as the commander-in-chief of the armed forces, declaring war and peace, and appointing the heads of the judiciary, state media, and the Islamic Revolutionary Guard Corps (IRGC). The Council on Foreign Relations notes that while the president is the "second-highest ranking official in Iran," the office lacks control over the military and security forces, severely limiting its ability to execute independent domestic or foreign policies.[1][2][5]

The presidency, defined primarily by Article 113, is tasked with executing the constitution and heading the executive branch, except in matters directly reserved for the Supreme Leader. Elected by popular vote for a four-year term, with a limit of two consecutive terms, the president appoints cabinet ministers, drafts the national budget, and manages the sprawling state bureaucracy. However, even these cabinet appointments—particularly for the ministries of intelligence, defense, and foreign affairs—require the tacit or explicit approval of the Supreme Leader.[1][3][6]

The structural imbalance is enforced by the Guardian Council, a 12-member body that acts as the constitutional gatekeeper. Six of its members are Islamic clerics appointed directly by the Supreme Leader, while the other six are jurists nominated by the head of the judiciary—who is also appointed by the Supreme Leader—and approved by parliament. This council holds the power to veto any legislation passed by the parliament if it deems the laws incompatible with Islamic law or the Constitution.[4][5]

More critically for the presidency, the Guardian Council vets all candidates for elected office. In recent election cycles, the council has disqualified thousands of parliamentary hopefuls and dozens of high-profile presidential candidates, effectively narrowing the field to those who demonstrate absolute loyalty to the Supreme Leader's vision. Florida International University researchers highlight that this vetting mechanism ensures the elected branches remain structurally subordinate to the unelected clerical establishment.[6][7]

Economic policy represents the primary domain where the president exercises genuine, albeit constrained, authority. The executive branch manages the day-to-day operations of the state, negotiates trade agreements, and attempts to navigate the economic pressures of international sanctions. Yet, even here, the Supreme Leader's influence looms large through his control over bonyads—massive, tax-exempt charitable foundations that control an estimated 20 percent of Iran's gross domestic product and answer only to him.[2][3]

The 1989 constitutional amendments further centralized power in the office of the Supreme Leader. Following the end of the eight-year Iran-Iraq War and the death of the Republic's founder, Ruhollah Khomeini, the assembly abolished the office of the prime minister, transferring its administrative duties to the president. Simultaneously, it removed the requirement that the Supreme Leader must be a marja (a top-ranking cleric), allowing a mid-ranking cleric like Khamenei to assume the role while expanding the office's absolute authority over state institutions.[1][4]

The Assembly of Experts, an 88-member body of Islamic scholars elected by the public every eight years, is theoretically empowered to appoint, monitor, and dismiss the Supreme Leader. In practice, however, the Guardian Council vets all candidates for the Assembly of Experts, creating a closed loop of accountability where the Supreme Leader indirectly controls the body tasked with overseeing him.[1][5]

This constitutional architecture guarantees that while the presidency can shift the tone of Iran's domestic administration and diplomatic engagement, it cannot alter the state's strategic trajectory. The dual authority structure absorbs public dissatisfaction through the elected branches, often making the president the public face of economic failures, while shielding the Supreme Leader and the core security apparatus from direct electoral consequences.[4][6][7]