The Ministry of National Defense is a government department responsible for overseeing a country's military and defense policies. Its primary role is to ensure national security by managing the armed forces, including the army, navy, and air force. The ministry develops defense strategies, allocates budgets, and coordinates with other government agencies to protect the nation. In many countries, the Ministry of National Defense also engages in international relations related to defense, collaborating with organizations like NATO or participating in peacekeeping missions. It plays a crucial role in responding to threats and maintaining the country's sovereignty through military readiness and strategic planning.