1, extended type. In order to safeguard their global interests, big countries pursue hegemonism, invade, subvert and infiltrate other countries.

2. Self-defense. We should rely mainly on our own strength to win extensive international support, prevent foreign enemies from invading and safeguard our own security. Adhere to the peaceful and independent national defense policy, never expand, and never allow other countries to occupy an inch of our country.

3. Alliance type. In the form of alliance, unite with other countries to make up for their own strength. It can be divided into expansion and self-defense, and it can also be divided into monistic and pluralistic alliances. The former has a big country as the leader.

4. Neutral type. Small and medium-sized developed countries strictly abide by the peaceful and neutral national defense policy, and formulate the overall national defense strategy and integration of defense and civilian technologies's national defense system. For example, Switzerland.

China's pursuit of peaceful rise belongs to active defense and self-defense. The international situation has gradually eased and hegemonism and power politics are still rampant. In peacetime, China should not only accelerate its development, but also ensure its security. "The wealth of nations" and "the theory of military strength" are the two pillars of China's standing among the nations in the world.

Extended data:

National defense comes into being with the emergence of the country and serves the national interests. Churchill famously said, "We have no eternal friends or enemies, only eternal interests." National defense in this language is directly related to national security, national dignity and social development.

Modern national defense, also known as social national defense, great national defense and national defense, is a huge and complex system, including armed construction, national defense system, military science and technology and industry, national defense engineering, military transportation and communication, manpower mobilization, national defense education and national defense laws and regulations. From the supreme head of state to every citizen, from military to politics, economy, culture, education, science and technology and ideology are closely related to it.

Modern national defense takes military forces as the core, including related non-military forces; It attaches importance to the war potential of the country, especially the mobilization efficiency in wartime; It is also a competition of comprehensive national strength based on economy and science and technology. The modern army is an armed group with intensive knowledge and technology, and it emphasizes quality over "sea tactics".

The role of national defense in peacetime is deterrence, which requires winning without fighting; The duty of national defense in wartime is actual combat, and the goal is victory.

Baidu encyclopedia-national defense