what does it mean to defect from a country

To defect from a country means to leave one's home country in a way that is considered illegal or a betrayal by that country, usually to join or seek asylum in another country, often due to political reasons or disagreement with the government. It implies giving up allegiance to the original country, frequently to participate in activities or live in conditions not permitted there, and is viewed as an act of disloyalty or treason by the country left behind. Defectors often risk severe punishment or persecution if caught by their home country.