Why was the Bush Doctrine an important element in the history of U.S. foreign policymaking?

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The Bush Doctrine was a significant shift in U.S. foreign policy that emphasized preemptive military action to protect national security, and marked the largest reassessment of U.S. foreign policy since the Truman administration's containment policy during the Cold War. It had far-reaching implications for U.S. foreign relations, particularly with regards to the War on Terror and the invasion of Iraq.

Why Was the Bush Doctrine an Important Element in the History