The evolving debate within NATO reinforces an enduring strategic lesson: lasting security ultimately rests on sustained national investment rather than permanent reliance on external partnersYet strategic consensus does not automatically translate into political consensus. In these countries, public opinion broadly accepts that higher defence spending is the price of national survival. Whether this transition succeeds will depend less on summit declarations than on sustained political commitment, industrial capacity and financial investment over the coming decade. The evolving debate within NATO reinforces an enduring strategic lesson: lasting security ultimately rests on sustained national investment rather than permanent reliance on external partners. Diversified defence capabilities, resilient supply chains and sustained military preparedness are not merely instruments of deterrence; they are essential pillars of national resilience.