Germany’s Chancellor Friedrich Merz has made a blunt admission amid an intensifying row over Berlin’s contribution to security guarantees, warning that any lasting arrangement “will not work without Russia’s consent.” The remarks have reignited debate over Europe’s security architecture, Germany’s role within NATO, and whether Western guarantees can be credible without Moscow at the table. Merz’s comments expose deep divisions in Europe over deterrence, diplomacy, and how far Germany is willing—or able—to go as pressure mounts for stronger commitments.