The outline of this paper is:Preface: Put the emphasis on the present situation of the U.S energy security ,and give a the introduction of the large-scale diplomatic activities of the U.S in Caspian Sea Area.

• 引言部分:重点分析了美国能源安全现状,并从战略层面上概括性地介绍了美国在里海地区展开的大规模能源外交。