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From the Marshall Plan to Iraq: The 10 Best and Worst US Foreign Policy Decisions

Published January 28, 2026, 09:20
From the Marshall Plan to Iraq: The 10 Best and Worst US Foreign Policy Decisions

In his article, Andreas Kluth analyzes the 10 best and 10 worst US foreign policy decisions over the past 250 years, according to research by the Society for Historians of American Foreign Relations (SHAFR). The research concluded that the US makes its best decisions when it uses its power to build and maintain an international system based on rules and laws, promoting global peace and prosperity. Conversely, the worst decisions are made when the US moves away from this philosophy, sabotaging multilateral organizations or acting outside the international legal framework. The best decisions include the alliance with France in 1778, which was crucial for the survival of the US. The worst include the Indian Removal Act of 1830 and the forced displacement of the Cherokee in 1838. Kluth emphasizes that creating and maintaining an international system that works for all countries is key to successful US foreign policy. The author notes that the second best decision was the creation of the United Nations, while the failure to prevent the war in Iraq in 2003 ranks among the worst. The analysis shows that American hegemony is most effective when combined with multilateral effort and respect for international law. Isolation and unilateral action, according to the research, lead to negative consequences.