As Trump’s presidency alters the established world order, Europe grapples with its security, questioning its reliance on the US, and faces the harrowing task of building its military capabilities in a rapidly changing geopolitical landscape.
The Crumbling Foundations of Western Security: Europe's Response to Trump's Shift

The Crumbling Foundations of Western Security: Europe's Response to Trump's Shift
Trump's foreign policy is reshaping global dynamics, leaving European leaders in a precarious situation as they confront their reliance on the US for security.
In an unprecedented crisis for Western security, the international order shaped post-World War II is now questioned as the geopolitical landscape shifts dramatically. Experts contend that "Trumpism will outlast his presidency," and the underlying concern is which nations will emerge to assume a leadership role as the US retreats. The impact of Trump's philosophy can be traced back to a fundamental critique he has maintained for decades about American involvement in protecting other democracies.
A defining moment came in February 1947, when Britain, financially exhausted after WWII, informed the US that it could no longer support Greece in its fight against a Communist insurgency. Britain was withdrawing from key areas, and the imminent threat of Soviet expansion into the Eastern Mediterranean became apparent. In an adaptive response, the US stepped in, embodying President Truman's Doctrine, laying the groundwork for a new world order.
The post-war era witnessed the US emerging as the leader of the free world. However, Trump's presidency has prompted a radical reevaluation of this role. He has notably criticized longstanding US commitments, asserting that the nation has been exploited by its allies. His administration’s hardline stance underscores a potential pivot away from a global leadership model toward a more isolationist approach.
This shift raises a daunting question for Europe. As American support wanes, particularly in military domains, the continent contemplates its security independence. Former UK Defence Secretary Ben Wallace warned that the Nordic pact of Article 5, which ensures mutual defense amongst NATO members, is waning, with some fearing the alliance's disintegration if Europe does not bolster its own defense budgets sharply.
Polling in France reveals that a significant portion of the populace no longer views the US as an ally, indicating a profound disillusionment with American foreign policy. Such sentiments highlight a growing perception of the US as unreliable, eroding 80 years of transatlantic cooperation.
As the threat of fragmentation looms, European nations are deliberating how to establish a self-sufficient defense structure. Historical over-reliance on NATO, especially the US, has hindered Europe’s military capabilities. Calls for a stronger European defense industry highlight an urgent need to achieve military independence.
Many experts stress that for Europe to protect its integrity and agency effectively, a cultural shift is required from viewing itself as dependent on US military support. As the global order continues to evolve with Trump’s outlook likely echoing beyond his presidency, the challenge facing Europe is not just about military funding; it's about maintaining unity and forming a cohesive strategy to ensure long-term security.
In a world that appears increasingly chaotic, Europe's journey toward self-reliance and potentially redefining security cooperation will be one of the most significant challenges of the next decade. The future of NATO and transatlantic relations hangs in the balance as these discussions unfold.