The so-called external threats and violations can be roughly divided into two categories: threats and violations of external nature and threats and violations of external society. However, because national security is a social phenomenon, external threats and violations against a country mainly refer to threats and violations caused by the existence of other societies outside a country. From the perspective of threats and infringers, such external threats and infringements include: (1) threats from other countries; (2) Threats from non-state external social organizations and individuals, such as threats and violations of a country by some international or regional organizations; (3) Threats and violations caused by foreign and domestic forces, such as threats and activities of domestic rebel groups abroad.