• Fitch Ratings says lingering U.S.-Europe tensions are raising questions over NATO cohesion and the reliability of U.S. security commitments.
  • The agency warns that renewed U.S.-EU tariffs remain a significant risk, while further disputes over Greenland are possible.
  • However, Fitch sees a major near-term conflict between Russia and NATO’s eastern members as very unlikely.

Fitch Flags NATO Credibility and Tariff Risks

Fitch Ratings is warning that strained U.S.-European relations continue to pose a risk to sovereign credit and macro-financial stability, even after a new Arctic security agreement reduced immediate tensions over Greenland. The ratings agency said lingering U.S.-Europe tensions are raising questions over NATO cohesion and the reliability of U.S. security commitments, while renewed U.S.-EU tariffs remain a significant risk.

The warning comes after the United States, Denmark, and Greenland signed a new Arctic-security agreement on September 22 that preserves Greenland’s sovereignty while expanding U.S. security access and excluding non-NATO military installations. The deal reduces the immediate risk of Greenland-triggered escalation, but it does not remove the deeper trade, alliance-credibility, and European defense-spending pressures Fitch identified.

“The agreement is a meaningful de-escalation, but only if implementation preserves the sovereignty commitments publicly emphasized by Denmark and Greenland,” Fitch said in its assessment.

Tariff Dispute Remains Unresolved

The underlying tariff dispute between the U.S. and the European Union is not fully resolved. The 2025 U.S.-EU political deal set a 15% U.S. tariff ceiling for most EU goods, but it awaits full EU institutional approval and leaves significant disputes—especially on steel and aluminum, digital regulation, and treatment of U.S. technology firms.

Fitch’s January scenario analysis estimated that a 10-percentage-point effective tariff rise on affected European countries could reduce European GDP by about 0.5% by end-2027 versus its baseline. Germany could see GDP 0.8%–0.9% lower by that point; a 25% tariff shock could roughly double the impact. Those were scenario estimates, not forecasts that such tariffs would necessarily take effect.

The agency also highlighted a fiscal channel: European governments could need to spend materially more on defense even if no direct conflict occurs. Fitch estimates median core-defense expenditure across EU and other European countries will rise by 0.6% of GDP between 2025 and 2029. NATO’s June 2025 benchmark calls for 3.5% of GDP in core defense by 2035, alongside broader defense-related goals.

Market and Economic Implications

The most sensitive markets are likely to be European export-oriented manufacturing, autos and components, steel and aluminum, industrial machinery, aerospace supply chains, and large U.S. digital-service firms if the EU uses broader retaliation tools. Fitch noted that the EU had prepared tariff measures affecting €95 billion of U.S. imports and that its Anti-Coercion Instrument could, if deployed, extend countermeasures into services.

| Channel | Likely effect | Stakeholders most exposed | |---|---|---| | Tariffs and retaliation | Higher import costs, weaker trade volumes, supply-chain uncertainty, and potential inflation pressure | Exporters, manufacturers, consumers, logistics firms, U.S. and EU importers | | Defense buildup | More public borrowing or budget reallocation, but higher demand for defense equipment and services | European taxpayers, defense contractors, technology and aerospace suppliers | | NATO credibility | Greater need for Europe to independently fund deterrence, readiness, munitions, air defense, and intelligence | European governments, eastern NATO members, defense industries | | Arctic security | More strategic value attached to Greenland, including basing, surveillance, critical minerals, and investment screening | Greenlanders, Denmark, U.S. defense planners, Arctic investors |

Political and Societal Context

The dispute sits at the intersection of three issues: alliance politics, Arctic geopolitics, and trade policy as leverage. Denmark and Greenland are linked to NATO through the Kingdom of Denmark. Pressure on a NATO ally over Greenland created concern that commercial coercion or territorial claims could undermine trust in Article 5 commitments.

The U.S. considers Greenland strategically important for missile defense and for countering Russian and Chinese activity in the Arctic. Existing arrangements already include a longstanding U.S. defense presence at Pituffik Space Base; the new agreement formalizes a more expansive security framework while emphasizing NATO membership and barring non-NATO basing.

Earlier in 2026, the administration had threatened escalating 10%–25% tariffs on Denmark and seven European countries over Greenland. That pledge was later withdrawn amid talks, demonstrating how directly trade policy became entangled with security negotiations.

For different stakeholders, the debate is sharply different. European governments have an interest in avoiding retaliatory escalation because of their security dependence on the U.S.; exporters and consumers want predictable trade rules; defense industries stand to gain from accelerated procurement; and Greenlanders face concerns about self-determination, local consent, environmental risks, and whether strategic competition turns their territory into a bargaining instrument.

Near-Term Outlook

The base case is reduced Greenland-related escalation after the new agreement, not a return to immediate tariff confrontation. The continuing risk is policy volatility: details, implementation, parliamentary approval, basing arrangements, sensitive-investment restrictions, and the NATO role will determine whether the deal strengthens trust or becomes a new source of friction.

Trade risk remains elevated because the 15% tariff arrangement is incomplete and unresolved issues include metals tariffs, EU digital regulation, and U.S. concerns over penalties on tech companies.

Fitch’s risk hierarchy remains useful: direct Russia-NATO war is a low-probability near-term tail risk, while hybrid pressure and defense-fiscal burdens are more plausible, nearer-term risks.

Longer-Term Pressures

Europe is likely to continue building more autonomous defense capacity regardless of the Greenland deal. Fitch sees persistent pressure for higher outlays, particularly in northern and eastern Europe and Germany; that can strengthen deterrence but also worsens fiscal trade-offs with social spending, investment, and deficit reduction.

The central question for investors and policymakers is therefore less whether a near-term conventional NATO-Russia conflict is imminent—it is not Fitch’s expectation—and more whether recurring U.S.-Europe disputes gradually reduce alliance cohesion, disrupt trade, and force a costly restructuring of European security and industrial policy.

Correction: A previous version of this article misstated the date of the U.S.-Denmark-Greenland Arctic security agreement. It was signed on September 22, 2026.