Iraq's republican system places day-to-day executive leadership in the hands of the government, with a separate head of state performing constitutional duties. Ali al-Zaidi serves as Prime Minister of Iraq and leads the national government.
Iraq is a parliamentary republic. The head of state is a president whose role is generally representative, constitutional, or limited, while day-to-day executive authority is exercised by a prime minister and cabinet. The government normally depends on the confidence of parliament, so the composition of the legislative majority is central to forming and sustaining the executive.
Legislative authority is exercised through a unicameral national parliament or assembly. It passes legislation, approves the budget, and performs the oversight and appointment functions assigned to it by the constitution. The judiciary is formally separate from the political branches, with the highest courts responsible for interpreting law and, where the constitutional system provides for it, reviewing constitutional questions.
Iraq is organized on a federal basis, so constitutional authority is divided between national institutions and constituent states, regions, provinces, or other federal units. Those subnational governments have their own legally protected responsibilities, while defense, foreign affairs, national finance, and other sovereign functions remain principally at the federal level. Political authority is exercised through the constitutional institutions described above, with elections, parliamentary confidence, or other constitutional procedures determining who holds office.
