Strategic Stability and the Closure of the International System

An Op-Ed of The NMC Theory This paper argues that the contemporary international system is increasingly shaped by structural closure. Using the 2026 Beijing summit as an illustrative case, it suggests that strategic rivalry between major powers is no longer oriented toward decisive victory but toward the management of enduring competition within systemic limits. The argument proceeds in three steps. First, the growing complexity and interdependence of global systems impose constraints on unilateral dominance, rendering stable unipolarity increasingly difficult to sustain. Second, the concentration of capabilities required for comprehensive strategic autonomy limits the number of actors capable of functioning as full poles, raising questions about the viability of broad multipolarity. Third, these dynamics generate a form of constrained bipolarity in which competition persists but unfolds within a structurally closed system characterized by shared vulnerabilities and mutual limits. Strategic stability, therefore, increasingly depends not on eliminating rivals, but on preserving resilience and coherence under conditions no major actor can fully escape.