VOA慢速英语:US Sends Navy Strike Group to Korean Peninsula

prudent – adj. wise, thoughtful, careful

reckless – adj. something dangerous or careless

destabilize – v. cause something to change of move

provocative – adj. causing a strong or angry reaction

commitment – n. promise to do or give something

sanction - n. an action to force a country to obey international laws by limiting or stopping trade