Moreover, Obama has been confronted with significant constraints, including the global economic crisis, domestic political polarization, a hostile Congress, and the rise of emerging powers that need the US but are unwilling to accept its dominance. As a result, he has failed to change strategic realities by, for example, reconciling America’s broader interests with those of Iran (a declared enemy), Pakistan (a “frenemy”), and Israel (a key ally).
此外，奥巴马还面临了重大约束，包括全球经济危机、国内政治两极分化、敌意国会，以及需要美国又不愿接受美国主导的新兴大国的崛起。结果，奥巴马没能通过（比如）将美国与伊朗（明确宣布的敌人）、巴基斯坦（亦敌亦友）和以色列（关键盟友）的更广泛的利益协调起来改变战略现实。