In a situation where internal stakeholders are not in agreement with the CEO's directive, creating a steering committee is the best course of action for supply management. This committee can facilitate discussion, ensure all perspectives are considered, and guide the project's direction in a structured manner. Polling external stakeholders, selecting the best source of supply, and performing cost regression analysis are useful actions but do not address the need for internal alignment and strategic guidance. References: Change management principles, stakeholder management strategies, project management frameworks.