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 also engages in international defense cooperation and diplomacy. It may work with organizations like NATO or participate in peacekeeping missions. The leadership of the ministry typically includes a Minister of Defense, who is responsible for making key decisions regarding military operations and defense initiatives.