"In politics, a defector is a person who gives up allegiance to one state in exchange for allegiance to another, changing sides in a way which is considered ill

"In politics, a defector is a person who gives up allegiance to one state in exchange for allegiance to another, changing sides in a way which is considered illegitimate by the first state." - Wikipedia You can have defectors internally in the country. In Russia, defectors have a tendency to fall out of a window, regardless of who might be walking on the street (collateral damage).