The Future of United Nations Peacekeeping in a Fragmenting World

Abstract United Nations peacekeeping is drifting from its post–Cold War liberal model toward a more sovereignty-focused approach. This essay posits that the change is not formal or doctrinal, but instead emerges through institutional drift and norm reinterpretation, driven by accelerated US retrenchment, China and Russia’s growing influence, host-state assertiveness, and internal United Nations adaptation. Drawing on theories of norm dynamics, bureaucratic culture, and empirical studies of peacekeeping mission practice, the analysis shows how liberal principles, such as democratization and human rights, are increasingly sidelined in favor of conflict containment and host-state support. The essay concludes by outlining four potential futures for peacekeeping: gradual drift into stabilization, normative fragmentation and regionalization, niche reaffirmation of liberalism, and formal norm redefinition. Together, these scenarios suggest peacekeeping is entering a postliberal era, marked not by collapse, but by contested adaptation within a shifting world order.