Beginning in the early 1970s and continuing into the post - cold war era , the u . s . foreign policy - making system has been transformed from the relatively closed and presidentially dominated system into a more open and pluralistic system 自20世纪70年代以来特别是冷战结束以后，美国外交决策系统由原来的相对集中和由总统占垄断地位向一个开放和多元的系统转变。
