The principal advisor on intelligence matters within the Department of Defense is known as who?

The principal advisor on intelligence matters within the Department of Defense is the Under Secretary of Defense for Intelligence and Security. This position is critical as it encompasses oversight of the intelligence community pertaining to national defense and ensures that intelligence efforts are aligned with the Department's objectives. The Under Secretary's role includes working closely with other defense leaders and agencies to ensure that intelligence operations support military needs effectively.

In this capacity, the Under Secretary facilitates communication between various intelligence agencies and the Department of Defense, oversees the implementation of policies related to intelligence operations, and advises senior military and civilian leaders on intelligence-related issues. This central role underscores the importance of coordination between intelligence and defense strategies to facilitate informed decision-making in national security matters.