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 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
A person who is disloyal to their own country is typically called a traitor or a defector.
a person disloyal to his own country
immigrant
It means that the person is not a native of the country where they are .
patrioctic.
They are not the same. Treason is where a citizen betrays their own country to enemy agencies by leaking national secrets or other acts of betrayal. Dissent is simply having a disagreement with existing government policies or philosophies.
Exile.