热点七、国际政治格局的演变一、美国大搞单边主义布什宣誓就职美国第４３任总统后，美国对外政策随之出现大幅调整，从执意发展国家导弹防御（NMD）系统，到最终退出《反导条约》，从拒不执行《京都议定书》，到中东政策的大幅摇摆，从单方面挑起美俄间谍纠纷，到处理中美撞机 Hotspots VII. Evolution of the International Political Structure I. U.S. Great unilateralism After Bush took the oath of office as the 43rd U.S. president, U.S. foreign policy has undergone a major readjustment, from the insistent development of the National Missile Defense (NMD) system to the eventual withdrawal. The Anti-Ballistic Missile Treaty, from the refusal to implement the “Kyoto Protocol” to the drastic swing in the Middle East policy, has unilaterally provoked disputes between the United States and Russia in spying to deal with the collision between China and the United States.