US, Japan, S. Korea Explore Limits to N. Korea’s Arms

ballistic missile – n. a missile that can travel long distances to strike a target

verifiable – adj. able to be proved true or made known

authorities – n. the power to give an order or do something

revenue – n. money that is earned through business activity

illicit – adj. not allowed, not lawful

provocative – adj. meant to cause a response or argument

mutually beneficial – adj. helping both sides equally

engagement – n. the act of being involved with someone or something