President Donald Trump’s administration has unveiled a new National Security Strategy that criticizes European allies and seeks to reassert U.S. global dominance, forcing Europe to confront a difficult choice about its future security and transatlantic ties. The document, released in December 2025 but highlighted in recent reports, represents a significant shift from decades of post-war cooperation, emphasizing “America First” and questioning the long-term reliability of European partners.
The strategy paints a grim picture of Europe’s current trajectory, citing issues such as immigration policies, declining birthrates, and censorship of free speech as factors leading to a “prospect of civilizational erasure.” It suggests that some European nations may not have economies and militaries strong enough to remain reliable allies, raising doubts about their viability within alliances like NATO. This criticism was prefigured by Vice-President JD Vance’s speech at the Munich Security Conference in February 2025, where he warned that the real threat to Europe comes from within, not from external powers like Russia.
In parallel, the strategy asserts U.S. power in the Western Hemisphere through a “Trump Corollary” to the Monroe Doctrine, aiming to secure American interests in Latin America and the Caribbean. This includes targeted military deployments and a more muscular approach to issues like drug trafficking and regional influence, challenging Chinese encroachment in what the U.S. considers its backyard.
European leaders have responded with concern and a recognition of the need for greater independence. Germany’s Chancellor Friedrich Merz, for instance, has called for Europe to “achieve independence” from America, but experts note that disentangling from U.S. security guarantees will be time-consuming and expensive. The dependence on American military support, built over decades, means that Europe cannot easily operate without the U.S., yet cannot fully rely on it under the new strategy.
Analysts like Karin von Hippel, a former U.S. State Department official, describe the document as “very nativist” and ideological, reflecting a shift away from shared democratic values towards a focus on sovereign nation-states. Sir Lawrence Freedman, Emeritus Professor of War Studies, cautions that while the strategy breaks with past norms, Europe’s ability to act independently is limited by practical constraints and the high cost of building autonomous defence capabilities.
The strategy explicitly aims to “cultivate resistance” within Europe to its current path, aligning with the rise of patriotic parties across the continent. This approach sees the U.S. supporting movements that seek to restore national greatness and push back against supranational institutions like the European Union, which the document questions for subverting national interests.
Ultimately, the new National Security Strategy forces Europe to navigate a precarious balance. On one hand, increased defence spending and strategic autonomy are urged, with Trump securing commitments for higher NATO budgets. On the other, the ideological divide and uncertain U.S. commitment mean that Europe must decide whether to shelter under a reshaped American sphere of influence or chart its own course in an increasingly multipolar world.
