The Impact of Trump’s “America First” Ideology on International Relations

Introduction

The “America First” doctrine, central to Donald Trump’s foreign policy, reshaped global diplomacy by prioritizing unilateralism, transactional engagements, and nationalist interests over multilateral cooperation and shared global governance.

FAF examines how this ideology strained alliances, destabilized international institutions, and redefined America’s role on the world stage.

Retreat from Multilateral Agreements and Institutions

Withdrawal from Climate and Health Governance

Trump’s rejection of the Paris Climate Accord in 2017 signaled a departure from U.S. climate leadership, undermining global efforts to combat climate change and ceding influence to China and the EU.

This was compounded by his 2025 executive order to re-exit the accord, further isolating the U.S.. Similarly, abandoning the World Health Organization (WHO) during the COVID-19 pandemic weakened international health coordination, exacerbating distrust in U.S. commitments to global crises.

Dismantling Diplomatic Frameworks

The Iran Nuclear Deal (JCPOA) collapsed after Trump’s 2018 withdrawal, destabilizing Middle Eastern security and alienating European allies who had invested in diplomatic solutions.

His administration’s skepticism of treaties extended to threats against the UN Human Rights Council and UNESCO, framing them as biased rather than avenues for constructive engagement.

Strained Alliances and NATO Tensions

Burden-Sharing Demands and Rhetorical Hostility

Trump’s repeated criticism of NATO members for insufficient defense spending—famously quipping, “Why should we defend them?”—fueled transatlantic distrust.

His threats to withdraw from NATO unless members met spending targets destabilized the alliance’s cohesion, emboldening adversaries like Russia.

By 2025, European leaders openly prepared for scenarios where the U.S. might abandon collective defense obligations.

Trade Wars and Tariff Policies

Unilateral tariffs on allies, including the EU and Canada, under Section 232 of the Trade Expansion Act, triggered retaliatory measures and disrupted supply chains.

The U.S.-Mexico-Canada Agreement (USMCA) replaced NAFTA with stricter rules but prioritized protectionism over climate commitments, straining regional cooperation. These actions exemplified Trump’s transactional approach, treating trade as a zero-sum game rather than a tool for mutual growth.

Transactional Diplomacy and Authoritarian Alliances

Embracing Autocrats Over Democracies

Trump’s praise for authoritarian leaders like Vladimir Putin and Kim Jong-Un contrasted sharply with traditional U.S. advocacy for democracy. His dismissal of Russian election interference and withholding of military aid to Ukraine in 2019 highlighted a willingness to prioritize personal diplomacy over accountability.

Similarly, unwavering support for Saudi Arabia’s war in Yemen, despite human rights abuses, underscored a shift toward realpolitik.

The Abraham Accords: A Mixed Legacy

While the Abraham Accords normalized relations between Israel and several Arab states, critics argued they sidestepped Palestinian rights, rewarding authoritarian regimes like the UAE and Bahrain with arms deals rather than fostering inclusive peace.

Erosion of Global Institutions and Soft Power

Undermining International Organizations

Trump’s 2025 executive order mandating a review of all multilateral memberships and treaties threatened to unravel decades of institutional engagement. Withdrawals from the UN Human Rights Council and funding cuts to Palestinian refugee programs alienated traditional partners and diminished U.S. moral authority.

Rise of Strategic Competitors

China capitalized on the U.S. retreat, expanding its influence through initiatives like the Belt and Road Initiative and positioning itself as a climate leader post-Paris withdrawal.

Similarly, Russia exploited NATO fissures, testing Western resolve through cyberattacks and territorial aggression in Ukraine.

Economic Nationalism and Its Global Repercussions

Trade Deficits and “Fair Trade” Rhetoric

Trump’s fixation on reducing trade deficits led to punitive tariffs on China, culminating in a Phase One deal that failed to address structural issues like intellectual property theft.

By 2025, renewed tariffs on $300 billion of Chinese goods risked global economic fragmentation, pushing allies toward alternative supply chains.

Weaponizing Financial Systems

Proposals to create an External Revenue Service to collect tariffs and restrict technology transfers reflected a broader strategy to decouple from China.

However, such measures alienated tech-dependent allies like Taiwan, whom Trump suggested should “pay for defense”.

Conclusion

A Legacy of Disruption and Realignment

Trump’s “America First” ideology fractured the post-WWII liberal order, replacing collective security with transactional deal-making and unilateral coercion.

While it achieved short-term gains, such as NATO spending increases, the long-term costs—diminished trust, empowered adversaries, and a vacuum in global leadership—have redefined international relations.

Allies now hedge against U.S. unpredictability, while rivals like China and Russia exploit institutional voids. Rebuilding America’s global role will require reconciling national interests with the cooperative frameworks Trump dismantled, a challenge compounded by enduring skepticism of multilateralism in U.S. politics.

The era of “America First” underscores a paradox: asserting dominance through isolation often weakens the very influence it seeks to preserve. As the world adapts to this new reality, the question remains whether the U.S. can reclaim its role as a stabilizing force or if the fractures of this ideology will endure.