Final answer:
The national policy established in Executive Order 13587 requires intelligence services to defeat threats and counterintelligence services to protect the nation from internal threats.
Step-by-step explanation:
The national policy established in Executive Order 13587 requires the use of intelligence services to defeat threats and counterintelligence services to protect the nation from internal threats.
This means that the government will employ intelligence agencies to gather information and take action against external threats, such as cyber attacks or espionage. Additionally, counterintelligence measures will be implemented to identify and mitigate potential threats from within the country, such as insider threats or government employees leaking sensitive information.
By utilizing these services, the government aims to enhance national security and safeguard against both external and internal risks.