VOA慢速英语:韩国的影响力随着朝鲜的威胁而降低

frustrate – v. to make ineffectual; bring to nothing; to prevent from succeeding

maximum – adj. the greatest amount or value of something

appeasement – n. the act of pleasing someone by giving or something desired

stance – n. position

currency – n. the money that a country uses

income – n. money that is earned from work or business

sanction – n. a measure designed to punish someone or something

tariff – n. a tax

retaliation – n. the act of repaying in kind; taking action against someone