50 CHAPTER 5 THE EXECUTIVE PART 1 EXECUTIVE AUTHORITY 5.1 Executive authority (1) Executive authority derives from the people of Zimbabwe and must be exercised in accordance with this Constitution. (2) The executive authority of Zimbabwe vests in the President and the Cabinet. PART 2 THE PRESIDENT AND VICE PRESIDENTS 5.2 The President The President is the Head of State and Government and the Commander-in-Chief of the Defence Forces. 5.3 Duty of President to uphold Constitution The President must— (a) uphold, defend, obey and respect this Constitution as the supreme law of the nation and must ensure that this Constitution and all the other laws are faithfully observed; (b) promote unity and peace in the nation for the benefit and well-being of all the people of Zimbabwe; (c) ensure protection of the fundamental human rights and freedoms and the rule of law; and (d) respect the diversity of the people and communities of Zimbabwe. 5.4 Qualifications for election as President and Vice-Presidents (1) A person qualifies for election as President or Vice-President if he or she— (a) is a citizen of Zimbabwe by birth or descent; (b) has attained the age of forty years; (c) is ordinarily resident in Zimbabwe; and (d) is registered as a voter. (2) A person is disqualified for election as President or Vice-President if he or she has already held office as President under this Constitution for two terms, whether continuous or not, and for the purpose of this subsection three or more years’ service is deemed to be a full term.