VOA慢速英语:美媒曝俄军悬赏塔利班暗杀美军

bounty - n. a amount of money given to someone as a reward for action against someone else

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

briefing - n. a short meeting to give and receive information

verify - v. to prove, show or state that something is true

warrant - v. to deserve

source - n. a person that gives information

perspective - n. a way of thinking about and understanding something