The country cannot stand without defense, and the people will be insecure without defense. As a country and a nation, the most important things are nothing more than two major events. One is a development issue and the other is a security issue. National defense is the product of the development and security needs of human society. It is a fundamental plan related to the life and death of the country and the nation.

It is also a competition based on comprehensive strength based on economy and technology. Function:

1. National security guarantee.

2. The premise of national independence.

3. An important condition for national prosperity and development.

National defense refers to the military activities carried out by the country to prepare for and resist aggression, stop armed subversion, terrorists, etc., and protect the country's sovereignty, unity, territorial integrity and security, as well as military-related political and Activities in economy, science and technology, diplomacy, education, culture and other aspects.

Extended information:

Basic characteristics of national defense

1. The integrity of national interests. The country's fundamental interests are concentrated in two aspects: security and development. Security issues mainly address issues of survival and non-invasion; development issues mainly address peacetime construction and external environment issues.

2. Diversity of forms of struggle. War is the most basic and highest form of national defense struggle, but national defense struggle is not only a contest of military strength, but also includes other forms such as politics, economy, and diplomacy.

3. The multi-layered nature of national defense goals. Due to the different national interests of each country, the strategies they have formulated are also different. Coupled with the differences in military strength and comprehensive national strength of each country, modern national defense presents a multi-level goal system.

Reference: Baidu Encyclopedia--National Defense