Jordan is a kingdom in the Middle East. Neighboring countries include Iraq, Israel, Saudi Arabia, Syria, and the region West Bank. Much of Jordan is covered by the Arabian Desert. However, the north-western part of Jordan is part of the Fertile Crescent. The government system is a constitutional monarchy. The chief of state is the King and the head of government is the Prime Minister. Jordan has a mixed economic system in which the economy includes a variety of private freedom, combined with centralized economic planning and government regulation. Jordan is a member of the Council of Arab Economic Unity (CAEU).