___________________State Department Under Secretary for Political Affairs, Wendy Sherman, told a Senate panel Thursday that any diplomatic engagement with Iran will be accompanied by the vigorous enforcement of sanctions already in place. But while the tough measures have worked so far, the United States government shutdown has forced the Treasury Department to furlough most employees, enforcing sanctions on Iran just as new negotiations are said to begin. ________________________周四,国务院政治事务副国务卿温迪?谢尔曼向参议院小组表示,(美国)同伊朗进行的所有外交活动都将伴随着已有制裁的大力加强.然而从目前来看,虽说迄今为止已采取严厉的制裁措施,但是由于美国政府停摆迫使财政部让大部分工作人员休假,所以导致对伊朗的制裁据说只是即将开始新一轮谈判.