国防 refers to the measures and strategies a nation employs to protect its sovereignty and territorial integrity. This includes military readiness, intelligence operations, and diplomatic efforts to deter potential threats. The goal of 国防 is to ensure the safety and security of a country's citizens and resources. In many countries, 国防 is managed by a dedicated government department, often called the Ministry of Defense. This organization oversees the armed forces, develops defense policies, and coordinates with other nations on security matters. Effective 国防 is crucial for maintaining peace and stability both domestically and internationally.