英语听力精选进阶版 14325（在线收听）

 Iran nuclear deal

Vocabulary

seeking

pursuing; wanting to do something

siege

military operation in which soldiers or police surround a place to stop food and supplies entering, so that the people inside stop fighting and come out

engaged in

involved in

high-stakes

high-risk

gamble

action which may be very successful but with a risk of failing very badly

skewed

unfair; unbalanced

uneasy

uncomfortable; worried

comprehensive

including many details; covering many aspects