The future of NATO: A strained alliance in Trump's second term

Al Jazeera EnglishAbout 3 min readDec 28, 2025Watch original
THE SUMMARYAI-generated

Key Concepts

  • NATO (North Atlantic Treaty Organization): A military alliance established by North American and European countries to provide collective security against the Soviet Union, now focused on broader security challenges.
  • Article 5: The principle of collective defense within NATO – an attack on one member is considered an attack on all.
  • GDP (Gross Domestic Product): The total monetary or market value of all finished goods and services produced within a country's borders in a specific time period.
  • Transactional Diplomacy: Foreign policy based on immediate, reciprocal benefits rather than long-term strategic alliances or shared values.
  • Soft Power: The ability to influence others through attraction and persuasion rather than coercion or payment.
  • Deterrence: The strategy of discouraging an action by threatening retaliation.

US Financial and Military Dominance within NATO

The United States has historically been the dominant force within NATO, contributing significantly to its financial, military, and political strength. Currently, Washington funds over two-thirds of NATO’s shared budgets, directly enabling the alliance’s core military capabilities. This substantial financial contribution has historically translated into considerable influence over alliance strategy, deployments, and crisis response. The US’s larger contribution allowed it to “set priorities, shape deployments, and steer the alliance's response to global threats.”

The Trump Administration’s Demands and Conditional Commitments

The Trump administration significantly altered the dynamic within NATO by demanding that member states increase their defense spending to 5% of their GDP – more than double the existing, longstanding target of 2%. President Trump explicitly linked US defense commitments to financial contributions from European allies, stating, “If you’re not going to pay, we’re not going to defend.” He reiterated this position, claiming to have said, “If you're not going to pay your bills, we're not going to defend you” seven years prior. This approach represents a shift towards transactional diplomacy within the alliance.

Erosion of US Leverage and Potential for Fragmentation

While Trump’s demands secured some short-term increases in defense spending from European nations, they also introduced uncertainty regarding the US commitment to Article 5 – the cornerstone of NATO’s collective defense. The signaling of US commitments as “transactional” risks eroding long-term US leverage, soft power, and overall leadership within the alliance. Allies are beginning to consider “hedging against an America they no longer see as fully reliable.” European leaders express a desire for cooperation but resist being “instructed on a daily basis what is allowed, what is not allowed and how our life will change because of the decision of a single person.”

US Withdrawal of Financial Commitment & European Response

Alongside demanding increased contributions from allies, Washington is also planning to reduce its own financial commitments to NATO. This reduction in funding threatens to diminish the US’s influence over alliance strategy and crisis response, as “money has always translated into power” within the organization. European leaders are now actively debating strategies to adapt to a potentially diminished US role, considering options such as increased spending, improved coordination, or reduced reliance on Washington.

Risks to NATO’s Cohesion and Deterrence

Analysts warn that a reduced US role could lead to fragmentation of NATO’s command structure and a weakening of its deterrence capabilities, particularly given the current geopolitical context of heightened tensions with Russia and instability in Eastern Europe. The potential loosening of the US’s “grip on Europe’s security architecture” could fundamentally reshape an alliance historically built on American leadership.

Conclusion

The evolving relationship between the US and NATO, characterized by demands for increased financial contributions from allies and a potential reduction in US commitments, presents significant challenges to the alliance’s future. While short-term cost savings may be realized by Washington, the long-term consequences – including diminished US influence, potential fragmentation, and weakened deterrence – pose a substantial risk to the stability of Europe’s security landscape. The shift towards transactional diplomacy threatens to undermine the foundational principles of collective security that have defined NATO for decades.

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