By 2026, simply declaring “commitment” to the 2030 Agenda is no longer enough. The global conversation has shifted from promises to execution, from alignment to measurable outcomes—and inconsistency is now penalized. In this landscape, Mexican cities—and their counterparts across the Americas, Europe, and Africa—face an uncomfortable truth: the multilateral agenda is being decided in cities, yet many local capacities remain too weak to translate global goals into infrastructu