小布什政府的强硬政策破坏了美国与欧洲盟友之间的关系，并导致美国的国际声望直线下跌。
The hard-line foreign policy of the Bush Administration undermines the relationship between the United States and its European allies, leading to a sharp decline of the US's reputation in the world.
or
The Bush's hard-line foreign policy undermines the relationship between the United States and its European allies, leading to a precipitous fall of the US's international reputation.
