The decisive factor was always American opposition. Washington viewed European military integration as potentially undermining NATO, duplicating capabilities, and fracturing the transatlantic command structure that kept Europe dependent on American strategic planning.

Now, with Trump explicitly conditioning NATO commitments on economic leverage, that calculus has changed. What was once a Ukrainian wish has become a French-German proposal, discussed openly at the highest levels of European leadership.

Zelenskyy's proposal comes as Europe confronts what Canadian Prime Minister Mark Carney called in his Davos speech Monday "a rupture in the world order"—a moment when the rules-based system that governed postwar international relations has collapsed beyond repair.

Europe currently fields approximately 1.5 million active-duty military personnel across all NATO member states, according to defense analysts. Doubling that force would require either massive conscription, significant increases in defense budgets, or both. Germany's defense spending, for example, recently reached 2 percent of GDP after decades below NATO targets—but a European army of 3 million would likely require 3 to 4 percent of GDP from major economies.

The proposal faces formidable obstacles. Europe has no unified command structure, no common procurement system, and no political framework for deploying forces without unanimous consent. Language barriers, divergent strategic cultures, and competing national interests have stymied lesser integration efforts for decades.

Yet the alternatives appear increasingly untenable. Ukraine has demonstrated that peer conflict in Europe requires sustained mobilization, vast ammunition stockpiles, and industrial capacity to replace losses—capabilities European militaries lack. Without American support, European NATO members would struggle to defend against Russian aggression in the Baltics or Poland, let alone project power eastward.

French President Emmanuel Macron has endorsed the concept of European strategic autonomy, though Paris and Berlin differ on whether such a force should operate within NATO structures or parallel to them. Poland and the Baltic states, meanwhile, view any diminution of American commitment as existential threat, making them skeptical of initiatives that could be perceived as weakening transatlantic ties.

Zelenskyy's renewed push comes at a moment when European publics increasingly view American security guarantees as unreliable. Polling across EU member states shows majorities now support increased defense spending and greater military independence—a reversal from just five years ago, when such proposals were dismissed as unnecessary given NATO's umbrella.

Whether Europe translates that sentiment into concrete action will determine the continent's strategic posture for decades. For now, Zelenskyy's proposal remains what it was a year ago: an idea with growing support but no clear path to implementation.

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