What term is defined as the broad course of action designed to achieve objectives?

The term defined as the broad course of action designed to achieve objectives is "National strategy." National strategy encompasses a long-term and comprehensive plan that outlines a country's approach to achieving its overall goals and objectives. This includes considerations of resources, capabilities, and external factors that influence the nation’s ability to pursue its interests and objectives effectively.

In contrast, operational strategy can refer to how specific objectives will be operationalized, often involving short-term operational goals that feed into the broader national strategy. Tactical plans focus on the specifics of how to execute particular tasks to meet short-term goals, while a mission statement generally articulates the purpose or fundamental reason for an organization's existence rather than defining a broad action course. Therefore, "National strategy" is the most appropriate term as it directly encompasses the concept of a broad course of action aimed at achieving overarching objectives at a national level.