近年来，美国最显著的对外政策变化就是宣称“重返”亚太或“再平衡”。奥巴马自诩为美国历史上首位“太平洋总统”，称美国是亚太地区的“常驻国家”。美国宣称21世纪是“美国的太平洋世纪”。自奥巴马2009年入主白宫伊始，美国便迫不及待地高调宣布要将战略重心和注意力“转向”亚洲。由于这一表述引发国内外争议，美国后来改称为“再平衡”。美国大力推行其亚太新战略的动因甚多，但美国军工集团的利益取向，以及美国要确保其“太平洋世纪”的雄心是主要原因。美国军工复合体素有“铁三角”之称，即军事力量、军火承包商和国会议员三者之间形成的伙伴性关系。总的看，美国的新亚太战略造成了不必要的地区紧张。
The most significant overall U.S. foreign policy shift in recent years has been the announcement of the so-called Pacific Pivot,and later the "Rebalancing" which means U.S.shifts attention and resources to the Asia-Pacific. Barack Obama proclaimed himself "America's first Pacific president" and pointedly reassured that the 21st century promises to be the American Century. This policy move was primarily driven by the military-industrial complex and American ambition to lead the Pacific among others. The military-industrial complex is used to signify the special relationship that can develop among military,defense-contractors and congressmen in the Capitol Hill. America's new Asia-Pacific strategy,nevertheless,created unnecessary tension in Asian Pacific region.
