The September 11 attacks resulted in the implementation of the Bush Doctrine, emphasizing preemption in foreign policy.
The effect of the September 11 attacks on U.S. foreign policy was the establishment of the Bush Doctrine, which emphasized preemption as a way to address potential threats to U.S. security. This doctrine allowed the United States to engage in preemptive military action against perceived threats, leading to the invasion of Afghanistan and Iraq.
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