Foreign Policy
America emerged from the Cold War as the world's sole superpower and has spent the decades since arguing about what to do with that position. The debate is about when to use force, how to lead alliances, and whether the country has overextended itself abroad.
Historical Background
George Washington warned against permanent foreign entanglements in his Farewell Address of 1796. For more than a century, the country generally followed his advice, except in its own hemisphere. The First and Second World Wars pulled the United States into global leadership it did not seek. The Marshall Plan funded the reconstruction of postwar Europe. The Cold War made American leadership permanent. NATO was founded in 1949. American military bases stretched across Europe, Asia, and the Middle East. The end of the Soviet Union in 1991 opened a brief unipolar moment. The September 11 attacks of 2001 launched two decades of war in Afghanistan and Iraq. The rise of China and a resurgent Russia have shifted the strategic landscape again. Americans now debate the same questions their grandfathers debated: how engaged the country should be, with whom, and at what cost.
The Conservative Argument
Conservative views on foreign policy span a wide range, but share a common conviction that American strength is the foundation of American security. A strong military deters war. Weakness invites aggression. Alliances like NATO are valuable when they serve clear national interests, and allies must carry their share of the load. Adversaries (China, Russia, Iran) must be confronted with resolve, not appeased. At the same time, many conservatives are wary of open-ended commitments and nation-building projects that drain American treasure and lives without clear goals. The proper aim is to defend American sovereignty, secure American interests, and avoid wars that cannot be won. Peace through strength is the historical doctrine that conservatives across factions tend to invoke.
The Progressive Argument
Progressive views also span a range, but share a conviction that American foreign policy should reflect American values, not just American power. Diplomacy, development aid, and multilateral cooperation are usually cheaper and more effective than military force. Climate change, addressed in part through agreements like the Paris Agreement, pandemics, and nuclear proliferation cannot be solved by any country alone. Human rights, refugee protection, and the defense of democracy abroad are legitimate American interests, not luxuries. Many progressives are deeply skeptical of military intervention after the long wars in Iraq and Afghanistan, and argue that the defense budget could be reduced without endangering security. International institutions, in this view, magnify American influence rather than constrain it. Restraint and cooperation, not unilateralism, build a more stable world.
Key Legislation and Turning Points
- •The Marshall Plan (1948) funded the reconstruction of postwar Europe.
- •The North Atlantic Treaty (1949) created NATO and committed the United States to European defense.
- •The War Powers Resolution (1973) limited the president's authority to commit forces without congressional approval, a key separation of powers check.
- •The Authorization for Use of Military Force (2001) provided the legal basis for the war on terror.
- •The Iraq War Resolution (2002) authorized the invasion of Iraq.
- •The withdrawal from Afghanistan (2021) ended the longest war in American history.
Why It Matters
Foreign policy decisions send Americans to war, shape the global economy, and determine whether the international order continues to favor open societies. They affect the price of energy, the security of allies, and the safety of trade routes that carry the goods Americans use every day. A republic that wants to remain free at home cannot ignore the world abroad. How it engages, and on what terms, is one of the deepest questions a free people can answer.