Should the European Union develop its own nuclear weapons arsenal independent of NATO and the United States?

With geopolitical instability rising, the debate over 'Strategic Autonomy' has moved to the ultimate deterrent: nukes. France is currently the only EU member with nuclear weapons, but they control the button, not Brussels. Proponents argue Europe needs its own 'insurance policy' if the U.S. becomes isolationist. Opponents argue this would violate non-proliferation treaties, cost billions, and terrify Russia into escalation.