This would be treason.
A traitor.
The commonly used term to speak about a person who betrays his own country is the word "traitor".
A traitor is a person who betrays someone else or a group/organization. They could also be someone who commits treason against their country.
traitor is a person who is disloyal to hisown country.
A person who goes against their own country is often referred to as a "traitor." This term typically denotes someone who betrays their country, especially by aiding enemies or acting in ways that undermine national interests. In some contexts, such individuals may also be described as "dissidents" or "rebels," depending on the nature of their actions and motivations.
A traitor is one who turns against his own country, group, or peers. The action of a traitor is treason.It's usually used in war,it means that a soldier in a country betrays his country or shoots his soldiers
traitor is a person who is disloyal to hisown country.
An expatriate or expat is a person who leaves their own country to live and settle in another country.
a person disloyal to his own country
It means that the person is not a native of the country where they are .
immigrant
patrioctic.