U.S. security policies are guidelines and strategies designed to protect the nation from threats, both domestic and international. These policies encompass various areas, including military defense, intelligence gathering, and cybersecurity. They aim to ensure the safety of citizens and maintain national interests. Key components of U.S. security policies include cooperation with international allies, such as NATO, and addressing issues like terrorism and cyber threats. The policies are shaped by agencies like the Department of Defense and the Department of Homeland Security, which work together to implement measures that enhance national security and respond to emerging challenges.