Section 27 of the Disaster Management Act does not constitute an impermissible delegation of plenary legislative power because: (1) it operates within a framework requiring collaborative governance and consultation; (2) the Minister's powers are subject to multiple express and implied constraints including objective necessity, limited duration, and stated purposes; (3) the provision does not grant power to amend or repeal Acts of Parliament; (4) the powers must be exercised only to the extent objectively necessary for specified purposes under section 27(3), not based on subjective ministerial belief; and (5) all exercises of power remain subject to constitutional limitations and judicial review. A state of disaster is fundamentally different from a state of emergency - it does not permit suspension of the constitutional order or derogation from rights beyond ordinary section 36 limitations, and does not threaten "the life of the nation." Parliamentary oversight through sections 42(3), 55(2), 56, and 92(2) of the Constitution remains fully operative during a state of disaster even without express provision in the DMA, as these are constitutional imperatives that cannot be displaced by ordinary legislation. Courts may review the validity of disaster declarations and regulations under ordinary administrative law and constitutional principles.