Iran
After the Supreme Leader, the Constitution defines the President of Iran as the highest state authority. The President is elected by universal suffrage for a term of four years, however, the president is still required to gain the Leader's official approval before being sworn in before the Parliament (Majlis). The Leader also has the power to dismiss the elected president anytime. The President can only be re-elected for one term.
The President is responsible for the implementation of the constitution, and for the exercise of executive powers in implementing the decrees and general policies as outlined by the Supreme Leader, except for matters directly related to the Supreme Leader, who has the final say in all matters. Unlike the executive in other countries, the President of Iran does not have full control over anything, as these are ultimately under the control of the Supreme Leader. Chapter IX of the Constitution of the Islamic Republic of Iran sets forth the qualifications for presidential candidates. The procedures for presidential election and all other elections in Iran are outlined by the Supreme Leader. The President functions as the executive of affairs such as signing treaties and other international agreements, and administering national planning, budget, and state employment affairs, all as approved by the Supreme Leader.
Supreme Leader of Iran
In March 1979, shortly after Ruhollah Khomeini’s return from exile and the overthrow of Iran's monarchy, a national referendum was held throughout Iran with the question "Islamic Republic, yes or no?". Although some groups objected to the wording and choice and boycotted the referendum, 98% of those voting voted "yes". Following this landslide victory, the constitution of Iran of 1906 was declared invalid and a new constitution for an Islamic state was created and ratified by referendum during the first week of December in 1979. According to Francis Fukuyama, the 1979 constitution is a "hybrid" of "theocratic and democratic elements" with much of it based on the ideas Khomeini presented in his work "" ("Hukumat-e Islami"). In the work, Khomeini argued that government must be run in accordance with traditional Islamic "sharia", and for this to happen a leading Islamic jurist ("faqih") must provide political "guardianship" ("wilayat" or "velayat") over the people. The leading jurist were known as "Marja'."