The mayor shall, at the beginning of each calendar year, and may at other times give the council information as to the affairs of the city and recommend measures considered necessary and desirable. The mayor shall preside at meetings of the council, represent the city in intergovernmental relationships, appoint with the advice and consent of the council the members of the citizen advisory boards and commissions, present an annual state of the city message, and perform other duties specified by the council and by article III. The mayor shall be recognized as head of the city government for all ceremonial purposes and by the governor for purposes of military law.