VOA慢速英语:Trump Fires FBI Director

usurp - v. to take and keep (something, such as power) in a forceful or violent way and especially without the right to do so

authority - n. the power to give orders or make decisions : the power or right to direct or control someone or something

prosecution - n. the act or process of holding a trial against a person who is accused of a crime to see if that person is guilty

classified - adj. kept secret from all but a few people in the government

disclosure - n. ​the act of making something known : the act of disclosing something​

controversy - n. argument that involves many people who strongly disagree about something