Which entity coordinates foreign policy and defense policy under the President's chairmanship?

The National Security Council (NSC) plays a pivotal role in coordinating foreign policy and defense policy under the chairmanship of the President. This council is primarily responsible for advising and assisting the President in making decisions related to national security and foreign affairs. It brings together key members of the government, including the Vice President, Secretary of State, Secretary of Defense, and other relevant officials, to ensure a comprehensive approach to national security challenges.

The NSC's functions include evaluating various security threats, developing strategies, and ensuring that foreign and defense policies are aligned with the nation's overall goals. By operating at this high level and directly involving the President, the NSC facilitates effective communication and collaboration among different sectors of the government, ensuring a unified response to global issues.

The other entities listed serve different roles: the National Defense Agency does not exist as a primary coordinating body for these matters, while the Department of Defense and the Department of State focus on military operations and diplomatic relations respectively rather than on the overarching coordination of policy. Thus, the NSC stands out as the entity that effectively integrates foreign and defense policy efforts under presidential leadership.