As Europe grapples with the implications of American foreign policy under Donald Trump, leaders are acutely aware of their dependency on U.S. support in the fight against Russia. With Trump’s shifting stance on NATO and his perceived closeness to Putin, Europe finds itself at a crossroads, facing a daunting reality where a united response to Russian aggression may be put to the test without robust American backing. From concerns about defense capabilities to the rising specter of far-right politics, European nations are urged to adapt to a new geopolitical landscape. The urgency grows as questions arise about whether Europe can confront Vladimir Putin on its own and how to ensure lasting security in a potentially fragmented alliance. In response, European leaders are exploring strategies to enhance their military readiness and diplomatic coherence, seeking ways to shield Ukraine from external pressures while grappling with the unpredictability of the U.S. administration.