1. Grounds for loss of nationality

Loss of nationality means no longer having the nationality of a country according to the conditions of loss of nationality specified in that country's law.

People naturally lose their nationality due to many reasons such as joining a foreign nationality, serving in a foreign army, or participating in a foreign state apparatus.

With the provision of automatic loss of nationality, it is difficult for a person to fall into a situation of dual or multiple nationalities even if they do not apply to renounce their old nationality. But the limitation of this regulation is that if the law does not specifically stipulate the accompanying conditions, the litigant may fall into a stateless state in case they have not received a new nationality but have naturally lost it. old nationality.

- The loss of nationality of a citizen occurs when that person is in situations where the law has pre-existing regulations.

The laws of countries around the world often stipulate specific cases that lead to the legal consequences of losing the litigant's nationality when they commit one of the following acts:

- Acquiring citizenship from another country

- Served in foreign armed forces

- Participate in the state apparatus of another country,...

Thus, of course loss of nationality is a case where citizens of a country automatically lose their nationality, not as a punishment from the state.

2. Cases of loss of Vietnamese nationality

According to Article 26 Law on Vietnamese Nationality:

“1. Being permitted to renounce Vietnamese nationality.

2. Being deprived of Vietnamese nationality.

3. Failing to register for retention of Vietnamese nationality as prescribed in Clause 2, Article 13 of this Law.

4. Falling into cases specified in Clause 2, Article 18, and Article 35 of this Law.

5. Falling into cases specified in treaties to which the Socialist Republic of Vietnam is a contracting party.”