defector – n. person who abandons their country for another one

verification – n. the process of establishing whether something is true or not

humble – adj. not proud; not thinking of yourself as better than others

atrocity – n. a very cruel or terrible act

extermination – n. to completely destroy or kill

hierarchy – n. a system that places people or things in difference levels and importance

prosecution – n. the act of holding a trial against a person accused of a crime to establish guilt or innocence